AT89C51IC2 Atmel Corporation, AT89C51IC2 Datasheet - Page 5

• Manufacturer Part Number: AT89C51IC2
• Manufacturer: Atmel Corporation

Specifications of AT89C51IC2

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Table 2. C51 Core SFRs
Table 3. System Management SFRs
Table 4. Interrupt SFRs
4301D–8051–02/08
PCON
AUXR
AUXR1
CKRL
CKSEL
OSCON
CKCKON0
CKCKON1
IEN0
IEN1
IPH0
IPL0
IPH1
IPL1
Mnemonic
Mnemonic
Mnemonic
PSW
ACC
DPH
DPL
SP
B
Add
Add
Add
D0h
AFh
E0h
F0h
8Eh
A2h
8Fh
A8h
B1h
B7h
B8h
B3h
B2h
81h
82h
83h
87h
97h
85h
86h
Name
Accumulator
B Register
Program Status Word
Stack Pointer
Data Pointer Low byte
Data Pointer High byte
Name
Power Control
Auxiliary Register 0
Auxiliary Register 1
Clock Reload Register
Clock Selection Register
Oscillator Control Register
Clock Control Register 0
Clock Control Register 1
Name
Interrupt Enable Control 0
Interrupt Enable Control 1
Interrupt Priority Control High 0
Interrupt Priority Control Low 0
Interrupt Priority Control High 1
Interrupt Priority Control Low 1
SMOD1
TWIX2
CY
EA
7
7
7
-
-
-
-
-
-
-
-
-
-
-
SMOD0
WDTX2
PPCH
PPCL
AC
EC
6
6
6
-
-
-
-
-
-
-
-
-
ENBOO
PCAX2
PT2H
PT2L
ET2
M0
F0
5
5
5
T
-
-
-
-
-
-
-
-
SIX2
PHS
RS1
PLS
ES
4
4
4
-
-
-
-
-
-
-
-
-
XRS1
PT1H
T2X2
PT1L
RS0
GF1
GF3
ET1
3
3
3
-
-
-
-
-
-
-
SCLKT0
XRS0
PX1H
PX1L
T1X2
ESPI
SPIH
SPIL
GF0
EX1
OV
2
2
2
0
-
-
-
OscBEn
EXTRA
ETWI
PT0H
TWIH
T0X2
PT0L
TWIL
ET0
PD
F1
1
1
M
1
-
-
-
-
OscAEn
SPIX2
KBDH
PX0H
KBDL
PX0L
DPS
CKS
KBD
EX0
IDL
AO
X2
0
0
0
P
-
5