AT89C51ID2 Atmel Corporation, AT89C51ID2 Datasheet - Page 9

• Manufacturer Part Number: AT89C51ID2
• Manufacturer: Atmel Corporation

Specifications of AT89C51ID2

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 60 MHz
• Cpu: 8051-12C
• Max I/o Pins: 32
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 2
• Eeprom (bytes): 2048
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 5.5
• Timers: 4
• Isp: UART
• Watchdog: Yes

Table 14. SFR Mapping
9
D8h
D0h
C8h
C0h
F8h
F0h
E8h
E0h
B8h
B0h
A8h
A0h
98h
90h
88h
80h
addressable
addressable
XXXX XX11
00X0 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
1111 1111
1111 1111
X000 000
1111 1111
1111 1111
1111 1111
1111 1111
AT89C51ID2
T2CON
CCON
P5 bit
SCON
TCON
PSW
ACC
IEN0
Bit
IPL0
0/8
PI2
0/8
P4
P3
P2
P1
P0
B
XXXX XXXX
XXXX XX00
XXXX 0000
XXXX X000
00XX X000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0000
0000 0111
FCON (1)
T2MOD
SADEN
SADDR
CMOD
TMOD
SBUF
IEN1
1/9
CH
SP
1/9
CL
Table below shows all SFRs with their address and their reset value.
XXXX XXXX
XXXX XXXX
XXXX X000
XXXX X0X0
X000 0000
0000 0000
0000 0000
0000 0000
0000 0000
xxxx xx00
CCAPM0
CCAP0H
CCAP0L
RCAP2L
EECON
AUXR1
IPL1
BRL
DPL
TL0
2/A
2/A
Reserved
XXXX XXXX
XXXX XXXX
XXXX X111
XXX0 0000
X000 0000
0000 0000
0001 0100
0000 0000
0000 0000
0000 0000
BDRCON
CCAP1H
CCAPM1
RCAP2H
CCAP1L
SPCON
SSCON
IPH1
DPH
TL1
3/B
3/B
Non Bit addressable
XXXX XXXX
XXXX XXXX
X000 0000
0000 0000
0000 0000
0000 0000
0000 0000
1111 1000
CCAPM2
CCAP2H
CCAP2L
SPSTA
SSCS
KBLS
TH0
TL2
4/C
4/C
XXXX XXXX
XXXX XXXX
XXXX XXXX
XXXX XXX0
X000 0000
0000 0000
0000 0000
0000 0000
1111 1111
CCAPM3
CCAP3H
CCAP3L
SPDAT
SSDAT
CKSEL
KBE
TH2
TH1
5/D
5/D
XXXX XXXX
XXXX XXXX
XXXX XXXX
XXXX X001
X000 0000
XX00 1000
0000 0000
WDTRST
1111 1110
OSSCON
CCAPM4
CCAP4H
CCAP4L
SSADR
AUXR
KBF
6/E
6/E
Addressable
XXXX XXX0
XXXX X000
X000 0000
00X1 0000
0000 0000
WDTPRG
1111 1111
1111 1111
CKCON1
CKCON0
P5 byte
PCON
CKRL
IPH0
7/F
7/F
4289C–8051–11/05
DFh
CFh
FFh
F7h
EFh
E7h
D7h
C7h
BFh
B7h
AFh
A7h
9Fh
8Fh
97h
87h