AT89C51RD2 Atmel Corporation, AT89C51RD2 Datasheet - Page 8

• Manufacturer Part Number: AT89C51RD2
• Manufacturer: Atmel Corporation

Specifications of AT89C51RD2

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

Table 3-11.
8
A0h
98h
90h
88h
80h
0000 0000
0000 0000
1111 1111
1111 1111
1111 1111
AT89C51RD2/ED2
SCON
TCON
0/8
P2
P1
P0
SFR Mapping
XXXX XXXX
0000 0000
0000 0111
TMOD
SBUF
SP
1/9
reserved
0XXX X0X0
0000 0000
0000 0000
0000 0000
AUXR1
BRL
DPL
TL0
2/A
XXX0 0000
0000 0000
0000 0000
BDRCON
DPH
TL1
3/B
0000 0000
0000 0000
KBLS
TH0
4/C
0000 0000
0000 0000
KBE
TH1
5/D
XXXX XXXX
0000 0000
0X00 1000
WDTRST
AUXR
KBF
6/E
XXXX X000
0000 0000
00X1 0000
WDTPRG
1111 1111
CKCON0
PCON
CKRL
7/F
4235K–8051–05/08
A7h
9Fh
8Fh
97h
87h