FLA
SH
-BA
SE
DM
ICR
OC
ON
TR
OLL
ER
S
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
ST
RA
TE
GY
Leve
rage
cor
e N
VM
com
pete
ncy
into
uni
que
mem
ory
and
logi
c pr
oduc
ts.
Non
vola
tile
Mem
orie
s
EP
RO
MS
Tele
com
mun
icat
ions
,C
ompu
ters
Mic
ro/
Per
iphe
rals
Con
sum
erA
utom
otiv
e
Logi
cD
evic
esM
ilita
ry, I
ndus
trial
,C
usto
m C
hips
,G
lue
Logi
c
In-S
yste
mP
rogr
amm
able
Por
tabl
e E
quip
men
t,Te
leco
mm
unic
atio
ns,
Avi
onic
s, M
ilita
ry
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
MA
RK
ET
ST
RA
TE
GY
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
HIS
TO
RY
•IN
TR
OD
UC
ED
AT
89C
51 IN
MA
Y 1
993
–B
AS
ED
ON
DA
TA
BA
SE
RE
CE
IVE
D F
RO
M IN
TE
L
•R
EV
EN
UE
S T
OP
PE
D $
30M
IN 1
995
•A
TM
EL
IS S
TIL
L O
NLY
CO
MP
AN
Y S
HIP
PIN
GLA
RG
E V
OLU
ME
S O
F L
OW
CO
ST
FLA
SH
-BA
SE
DM
ICR
OC
ON
TR
OLL
ER
S–
SE
CR
ET
IS A
TM
EL’
S F
LAS
H T
EC
HN
OLO
GY
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
ME
L’S
FLA
SH
ME
MO
RY
TE
CH
NO
LOG
Y•
US
ES
TU
NN
ELI
NG
TO
PR
OG
RA
M–
BA
SE
D O
N E
EP
RO
M C
ELL
NO
T E
PR
OM
CE
LL–
NO
DC
CU
RR
EN
T R
EQ
UIR
ED
TO
PR
OG
RA
M
•D
OE
S N
OT
NE
ED
CO
MP
LIC
AT
ED
ALG
OR
ITH
MS
TO
ER
AS
E O
R W
RIT
E–
SIM
PLE
ON
E-S
TE
P P
RO
GR
AM
MIN
G
•N
EE
DS
ON
LY S
ING
LE V
OLT
AG
E–
3V O
R 5
V E
RA
SE
AN
D W
RIT
E
•P
RO
CE
SS
CO
MP
AT
IBLE
WIT
H L
OG
IC O
N S
AM
E C
HIP
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
FLA
SH
VE
RS
US
OT
P•
EP
RO
M C
ELL
IS S
MA
LLE
R T
HA
N F
LAS
H C
ELL
–M
EM
OR
Y A
RR
AY
IS S
MA
LL P
OR
TIO
N O
F M
CU
CH
IP
•A
TM
EL
IS A
ME
MO
RY
CO
MP
AN
Y–
FLA
SH
MC
U P
RO
CE
SS
IS B
AS
ED
ON
AD
VA
NC
ED
FLA
SH
ME
MO
RY
TE
CH
NO
LOG
Y
•A
TM
EL’
S F
LAS
H-B
AS
ED
MC
U IS
A S
MA
LLE
R D
IE T
HA
NC
OM
PE
TIT
OR
S’ O
TP
VE
RS
ION
S
AT
ME
L’S
FLA
SH
-BA
SE
D M
CU
S A
RE
LE
SS
EX
PE
NS
IVE
TH
AN
OT
PS
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
ISP
DO
WN
LOA
DA
BLE
MC
Us
CH
AN
GE
FLA
SH
ME
MO
RY
VIA
4-P
IN C
ON
NE
CT
OR
•A
CC
ELE
RA
TE
PR
OD
UC
T D
EV
ELO
PM
EN
T•
ELI
MIN
AT
E S
OC
KE
TS
•S
IMP
LIF
Y P
RO
DU
CT
TE
ST
ING
•U
P-D
AT
E P
RO
DU
CT
ION
WIT
HO
UT
ST
OP
PIN
GLI
NE
•M
AN
UF
AC
TU
RE
CU
ST
OM
ER
SP
EC
IFIC
PR
OD
UC
TS
•U
P-G
RA
DE
RE
MO
TE
LY
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
PR
OD
UC
T O
FF
ER
ING
S
•A
T89
8X
C51
SE
RIE
S–
CO
MP
AT
IBLE
WIT
H IN
DU
ST
RY
ST
AN
DA
RD
–A
IME
D A
T B
RO
AD
MA
RK
ET
•A
T90
AV
RT
M S
ER
IES
–P
RO
PR
IET
AR
Y H
IGH
PE
RF
OR
MA
NC
E A
RC
HIT
EC
TU
RE
–IN
ITIA
LLY
AIM
ED
AT
NA
RR
OW
HIG
H V
OLU
ME
MA
RK
ET
•A
RM
7TD
MI 3
2-B
IT R
ISC
SE
RIE
S–
LOW
CO
ST
, HIG
H P
ER
FO
RM
AN
CE
EM
BE
DD
ED
CO
RE
–A
IME
D A
T C
OM
PU
TE
INT
EN
SIV
E A
PP
LIC
AT
ION
S
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
ME
L’S
MC
U F
AM
ILIE
SP
RIC
E V
S P
ER
FO
RM
AN
CE
AV
R8
C51
AV
R16
AR
M7T
DM
I
KE
YLE
SS
AP
PLI
AN
CE
S
AU
TO
MO
TIV
E
CE
LLP
HO
NE
S
SE
TT
OP
BO
XE
S
LAS
ER
PR
INT
INT
ER
NE
T
$1$2
$5$1
0$2
0
DIS
K D
RIV
ES
UN
DE
R H
OO
D
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
8XC
51 C
OM
PA
TIB
LEM
ICR
OC
ON
TR
OLL
ER
S
AT
89 S
ER
IES
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
SO
CK
ET
DR
OP
-IN
SA
T89
C51
AT
89C
52A
T89
C55
FLA
SH
4K
8K
20K
SR
AM
128
256
256
T/C
s2
3
3S
PE
ED
0-24
0
-24
0-28
AV
AIL
NO
W
NO
WN
OW
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
SM
ALL
FO
OT
PR
INT
MC
Us
AT
89C
1051
AT
89C
2051
PA
CK
AG
E
20 P
IN
20 P
INF
LAS
H
1K
2KS
RA
M
64
128
T/C
s 1
2C
OM
PA
RA
TO
R 1
1IO
L D
RIV
E
20m
A
20m
A
AT
ME
L S
HIP
PE
D 1
MU
IN F
IRS
T Y
EA
R!!!
!!!
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
AB
X05
1
•T
WO
WA
Y A
DA
PT
ER
BO
AR
D F
OR
IN C
IRC
UIT
EM
ULA
TIO
N•
CO
NV
ER
TS
40
PIN
SO
CK
ET
S T
O X
051
FO
OT
PR
INT
AN
D 2
0 P
IN T
O40
PIN
•O
RD
ER
AS
PA
RT
NU
MB
ER
AT
AB
X05
1
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
●C
PU
IS E
NH
AN
CE
D ‘5
2 C
OR
E–
INT
ER
RU
PT
RE
CO
VE
RY
FR
OM
PO
WE
R D
OW
N–
WA
TC
HD
OG
TIM
ER
–D
UA
L D
AT
A P
OIN
TE
R–
SP
I SE
RIA
L IN
TE
RF
AC
E
●A
WA
KE
TM M
EM
OR
Y A
RC
HIT
EC
TU
RE
–8K
BY
TE
S D
OW
NLO
AD
AB
LE F
LAS
H V
IA S
PI
–2K
BY
TE
S O
N-B
OA
RD
EE
PR
OM
WIT
H 1
00K
ER
AS
E/W
RIT
EC
YC
LES
–C
AN
EX
EC
UT
E F
RO
M F
LAS
H W
HIL
E W
RIT
ING
TO
EE
PR
OM
●S
TA
ND
AR
D A
ND
LV
PA
RT
S A
VA
ILA
BLE
Q29
6
AT
89S
8252
ISP
DO
WN
LOA
DA
BLE
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
89S
8252
BLO
CK
DIA
GR
AM
FLA
SH
INT
ER
RU
PT
CO
NT
RO
L
CP
U
OS
C
EX
TE
RN
AL
INT
ER
RU
PT
S
UA
RT
PO
RT
. .
TX
D
R
XD
CO
UN
TE
RIN
PU
TS
TIM
ER
1
TIM
ER
0
TIM
ER
2
SP
IE
EP
RO
MR
AM
B
US
CO
NT
RO
L4
I
/ O P
OR
TS
P0
P1
P2
P3
AD
DR
ES
S /
DA
TA
SP
I SE
RIA
LIN
TE
RF
AC
E
WA
TC
H
DO
G
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
2KB
HIG
H-E
ND
UR
AN
CE
ON
-CH
IP E
2
•10
0,00
0 R
EA
D/W
RIT
E C
YC
LES
–ID
EA
L F
OR
DA
TA
-LO
GG
ING
, SY
ST
EM
CA
LIB
RA
TIO
N, &
CU
ST
OM
ER
-S
PE
CIF
IC D
AT
A A
PP
LIC
AT
ION
S
•D
AT
A S
EC
UR
ITY
–O
N-C
HIP
EE
PR
OM
KE
EP
S D
AT
A F
RO
M P
RY
ING
EY
ES
•H
IGH
ER
INT
EG
RA
TIO
N–
RE
DU
CE
S C
HIP
CO
UN
T, S
AV
ES
BO
AR
D S
PA
CE
–F
RE
ES
I/O
s F
OR
OT
HE
R F
UN
CT
ION
S
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
89S
8252
IN-S
YS
TE
M P
RO
GR
AM
MIN
G
PA
RA
LLE
L O
R S
ER
IAL
PO
RT
MO
DE
M
CA
BLE
ISP
UN
LEA
SH
ES
TH
E IM
AG
INA
TIO
N
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
-SP
RO
G-0
1 IS
P P
RO
GR
AM
ME
R
AC
TIO
NLE
D
Inst
ruct
ion
Inpu
t
Dat
a O
utpu
t
Clo
ck In
RE
SE
T
Tar
get V
cc
Tar
get G
ND
Vcc
MO
SI
MIS
O
SC
K
RE
SE
T
GN
D
SP
IP
rogr
amm
ing
Don
gle
Tar
get V
ccLE
D
TA
RG
ET
SY
ST
EM
AT
89S
8252
PC
Par
alle
lP
ort
Win
dow
s-B
ased
ISP
Pro
gram
mer
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
• C
ode,
Foo
tprin
t-C
ompa
tible
with
Indu
stry
Sta
ndar
d 80
C51
• 8
KB
RO
M P
rogr
am M
emor
y
• 2
56B
RA
M
• 3
Tim
er/C
ount
ers
• 1
UA
RT
Ser
ial I
nter
face
• 3
2 I/O
Pin
s
• W
ide
Too
ls S
uppo
rt
AT
89S
8252
RA
ISE
S T
HE
ST
AN
DA
RD
AT
89S
8252
Has
Fea
ture
s U
n-M
atch
ed b
y A
ny O
ther
8-B
it M
CU
• 8
0C52
Dro
p-In
Rep
lace
men
t
• 8
KB
Fla
sh P
rogr
am M
emor
y
• 1
,000
Rea
d/W
rite
Cyc
les
• S
tatic
to 2
4 M
Hz
Ope
ratio
n
• 4
-Wire
In-S
yste
m P
rogr
amm
abili
ty
• 2
KB
Hig
h-E
ndur
ance
EE
PR
OM
• S
PI S
eria
l Int
erfa
ce
• D
ual D
ata
Poi
nter
s
• W
atch
dog
Tim
er
• In
terr
upt R
ecov
ery
from
Pow
er-D
own
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
LOW
VO
LTA
GE
MC
Us
PA
RT
C
1051
C20
51
C51
C
52
S82
52 C
55F
LAS
H
1K
2
K
4K 8
K
8K 2
0KE
EP
RO
M
N
A
NA
NA
NA
2K
N
AS
RA
M 6
4
128
128
256
256
256
AV
AIL
AB
LE N
OW
N
OW
NO
WN
OW
Q39
6Q
396
ALL
AT
ME
L LV
MIC
RO
CO
NT
RO
LLE
RS
OP
ER
AT
E A
T 2
.7 V
OLT
S
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
FLA
SH
ME
MO
RY
AD
VA
NT
AG
ES
PR
OD
UC
T D
EV
ELO
PM
EN
T
•P
RO
DU
CT
DE
VE
LOP
ME
NT
TIM
E IS
SH
OR
TE
R–
ER
AS
ING
TA
KE
S <
1 S
EC
ON
D U
SIN
G E
LEC
TR
ICA
LP
ULS
ES
–A
T89
XX
X C
AN
BE
RE
PR
OG
RA
MM
ED
AG
AIN
AN
D A
GA
IN
•D
ES
IGN
FR
EE
DO
M IS
MA
GN
IFIE
D–
PR
OG
RA
MM
ING
PO
WE
R IS
LO
W–
ER
AS
ING
DO
ES
NO
T R
EQ
UIR
E P
HY
SIC
AL
AC
CE
SS
TO
PA
RT
–C
OD
E D
OE
S N
OT
HA
VE
TO
BE
FR
OZ
EN
UN
TIL
JU
ST
BE
FO
RE
PR
OD
UC
TIO
N
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
FLA
SH
ME
MO
RY
AD
VA
NT
AG
ES
MA
NU
FA
CT
UR
ING
CO
ST
S
•S
UP
PO
RT
S J
US
T-I
N-T
IME
MA
NU
FA
CT
UR
ING
–A
T89
XX
X C
AN
BE
PR
OG
RA
MM
ED
BY
A P
RO
GR
AM
ME
R,
BO
AR
D T
ES
TE
R O
R IN
-SY
ST
EM
JU
ST
BE
FO
RE
SH
IPM
EN
T
•R
ED
UC
ES
INV
EN
TO
RY
CO
ST
S–
SIN
GLE
PA
RT
CA
N B
E IN
VE
NT
OR
IED
AN
D P
RO
GR
AM
ME
DA
S N
EE
DE
D IN
A M
ULT
IPLE
PR
OD
UC
T M
AN
UF
AC
TU
RIN
GE
NV
IRO
NM
EN
T
•S
IMP
LIF
IES
PR
OD
UC
T R
EW
OR
K–
DE
VIC
E C
AN
BE
RE
-PR
OG
RA
MM
ED
AS
NE
ED
ED
•IM
PR
OV
ES
PR
OG
RA
MM
ING
YIE
LD–
FLA
SH
CA
N B
E F
ULL
Y T
ES
TE
D A
FT
ER
PA
CK
AG
ING
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
89C
5X O
TP
RE
PLA
CE
ME
NT
•D
ES
IGN
ED
TO
FIT
INT
O O
TP
PR
OD
UC
TIO
N F
LOW
PLU
S:
–P
RO
GR
AM
MIN
G Y
IELD
IS 1
00%
–C
AN
BE
RE
PR
OG
RA
MM
ED
OV
ER
AN
D O
VE
R
•F
LAS
H M
EM
OR
Y IS
BLO
CK
ER
AS
ED
AN
DP
RO
GR
AM
ME
D O
NE
BY
TE
AT
A T
IME
–A
PP
LY A
DD
RE
SS
, DA
TA
AN
D P
RO
GR
AM
MIN
G P
ULS
E
•N
O C
HA
NG
E IS
RE
QU
IRE
D T
O E
XIS
TIN
GP
RO
GR
AM
MIN
G H
AR
DW
AR
E•
SO
FT
WA
RE
DR
IVE
R M
US
T B
E U
PD
AT
ED
TO
AD
DE
RA
SE
CA
PA
BIL
ITY
AN
D IN
SU
RE
RE
LIA
BIL
ITY
–C
ON
TA
CT
YO
UR
PR
OG
RA
MM
ER
CO
MP
AN
Y F
OR
TH
E U
PD
AT
E
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
89C
5X M
RO
M R
EP
LAC
EM
EN
T•
80C
5X M
RO
M F
EA
TU
RE
S–
AS
P IS
LO
W (
$2 T
O $
4)–
NR
E IS
HIG
H (
TY
PIC
ALL
Y $
4K)
–C
OD
E M
US
T B
E F
RO
ZE
N 8
WE
EK
S+
BE
FO
RE
SH
IPM
EN
T–
MR
OM
IS N
OT
CH
AN
GE
AB
LE–
EA
CH
UN
IQU
E C
OD
E M
US
T B
E IN
VE
NT
OR
IED
•A
T89
C5X
AD
VA
NT
AG
ES
–C
OD
E C
AN
BE
PR
OG
RA
MM
ED
1 M
INU
TE
BE
FO
RE
US
E–
DE
VIC
E C
AN
BE
ER
AS
ED
AN
D R
EU
SE
D–
1 P
AR
T T
YP
E C
AN
BE
INV
EN
TO
RIE
D F
OR
MA
NY
DIF
FE
RE
NT
PR
OD
UC
TIO
N U
NIT
S
CO
ST
OF
US
E F
OR
AT
89C
5X IS
FA
VO
RA
BLE
INM
AN
Y S
YS
TE
MS
US
ING
<20
K P
AR
TS
/YE
AR
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
PR
OD
UC
T C
OM
PA
RIS
ON
89
C5X
80C
5X87
C5X
87C
5X
ME
MO
RY
FLA
SH
MA
SK
OT
PE
PR
OM
ER
AS
AB
LEY
ES
NO
NO
YE
SE
RA
SE
TIM
E1
SE
CN
AN
A20
MIN
RE
US
AB
LEY
ES
NO
NO
YE
SP
AC
KA
GE
SA
LLA
LLA
LLLI
MIT
ED
PR
ICE
MO
DE
RA
TE
LOW
MO
DE
RA
TE
HIG
HN
RE
NO
YE
SN
ON
OC
OD
E F
RE
EZ
E1
MIN
8WK
S+
1 M
IN1
MIN
LEA
D T
IME
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
DE
VE
LOP
ME
NT
TO
OLS
•A
LL A
TM
EL
MIC
RO
CO
NT
RO
LLE
RS
AR
EC
OM
PA
TIB
LE W
ITH
IND
US
TR
Y S
TA
ND
AR
D‘C
51–
EX
IST
ING
AS
SE
MB
LER
S A
ND
CO
MP
ILE
RS
CA
N B
EU
SE
D–
EX
IST
ING
HA
RD
WA
RE
DE
VE
LOP
ME
NT
AN
DE
MU
LAT
OR
TO
OLS
CA
N B
E U
SE
D
•P
RO
GR
AM
ME
R S
UP
PO
RT
IS W
IDE
SP
RE
AD
–A
TM
EL
BB
S C
ON
TA
INS
UP
DA
TE
D L
IST
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
AT
89C
5X IN
-SY
ST
EM
PR
OG
RA
MM
ING
•P
AR
ALL
EL
PR
OG
RA
MM
ING
–N
O N
EE
D T
O H
AV
E P
HY
SIC
AL
AC
CE
SS
TO
PA
RT
–A
CC
ES
S
PR
OG
RA
MM
ING
SIG
NA
LS E
LEC
TR
ICA
LLY
–C
ON
NE
CT
A P
RO
GR
AM
ME
R O
R P
C T
O P
RO
GR
AM
TH
EC
HIP
–A
PP
LIC
AT
ION
NO
TE
SH
OW
ING
HO
W T
O U
SE
A P
C IS
AV
AIL
AB
LE
•S
ER
IAL
PR
OG
RA
MM
ING
–O
NE
AT
89C
51 C
AN
BE
US
ED
TO
RE
CE
IVE
SE
RIA
L D
AT
AA
ND
PR
OG
RA
M A
NO
TH
ER
AT
89C
XX
IN S
YS
TE
M–
AP
PLI
CA
TIO
N N
OT
E S
HO
WIN
G H
OW
TO
IMP
LEM
EN
TT
HIS
CO
NC
EP
T IS
AV
AIL
AB
LE
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
LEA
DT
IME
S
•M
CU
LE
AD
TIM
E W
ILL
RE
MA
IN <
8 W
EE
KS
–A
TM
EL
DE
LIV
ER
S W
HE
N N
O O
NE
ELS
E C
AN
•G
RE
W 6
00%
IN ‘9
5 B
UT
LE
AD
TIM
ES
RE
MA
INE
DS
HO
RT
–C
AP
AC
ITY
AV
AIL
AB
LE F
OR
MC
U G
RO
WT
H
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
FA
MIL
Y M
EM
BE
RS
AT
89C
51P
IN C
OM
PA
TIB
LE W
ITH
8X
C51
(4K
FLA
SH
)A
T89
LV51
2.7
V V
ER
SIO
N O
F A
T89
C51
AT
89C
52D
OU
BLE
ME
MO
RY
VE
RS
ION
(8K
FLA
SH
)A
T89
LV52
2.7
V V
ER
SIO
N O
F A
T89
C52
AT
89C
55P
IN C
OM
PA
TIB
LE W
ITH
AT
89C
52 (
20K
FLA
SH
)A
T89
C20
512K
FLA
SH
/20
PIN
PA
CK
AG
EA
T89
C10
511K
FLA
SH
/20
PIN
PA
CK
AG
EA
T89
S82
52D
OW
NLO
AD
AB
LE F
LAS
H
MO
RE
VE
RS
ION
S A
RE
CO
MIN
G
PA
RT
#
DE
SC
RIP
TIO
N
MIC
RO
CO
NT
RO
LLE
RS
cust
5/9
6
MC
U IN
FO
RM
AT
ION
●D
AT
A B
OO
K–
PR
INT
VE
RS
ION
& C
D R
OM
VE
RS
ION
●W
EB
SIT
E–
HT
TP
://W
WW
.AT
ME
L.C
OM
●A
TM
EL
FA
X-B
AC
K (
800
292
8635
)–
DA
TA
SH
EE
TS
, A
PP
NO
TE
S A
ND
SU
PP
OR
T T
OO
L L
IST
S
●A
TM
EL
BB
S (
408
436
4309
)–
AP
P N
OT
ES
SO
FT
WA
RE
AN
D S
CH
EM
AT
ICS
–S
UP
PO
RT
TO
OL
LIS
TS
–S
HA
RE
WA
RE
AS
SE
MB
LER
●E
MA
IL–
MC
U@
AT
ME
L.C
OM
● IN
DU
ST
RY
ST
AN
DA
RD
AR
CH
ITE
CT
UR
E●
FLA
SH
PR
OG
RA
M M
EM
OR
Y●
PR
OG
RA
MM
AB
LE IN
-SY
ST
EM
FLA
SH
-BA
SE
DM
ICR
OC
ON
TR
OLL
ER
S