AT89C51IC2 Atmel Corporation, AT89C51IC2 Datasheet - Page 8

• 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 10. Two-Wire Interface Controller SFRs
Table 11. Keyboard Interface SFRs
8
SSCON
SSCS
SSDAT
SSADR
KBLS
KBE
KBF
Mnemonic
Mnemonic
AT89C51IC2
Add
Add
9Ch
9Dh
9Eh
93h
94h
95h
96h
Name
Synchronous Serial control
Synchronous Serial Status
Synchronous Serial Data
Synchronous Serial Address
Name
Keyboard Level Selector
Keyboard Input Enable
Keyboard Flag Register
SSCR2
KBLS7
SSC4
SSD7
SSA7
KBE7
KBF7
7
7
KBLS6
SSPE
SSC3
SSD6
SSA6
KBE6
KBF6
6
6
SSSTA
KBLS5
SSC2
SSD5
SSA5
KBE5
KBF5
5
5
SSSTO
KBLS4
SSC1
SSD4
SSA4
KBE4
KBF4
4
4
KBLS3
SSC0
SSD3
SSA3
KBE3
KBF3
SSI
3
3
KBLS2
SSAA
SSD2
SSA2
KBE2
KBF2
2
2
0
SSCR1
KBLS1
SSD1
SSA1
KBE1
KBF1
1
1
0
4301D–8051–02/08
SSCR0
KBLS0
SSGC
SSD0
KBE0
KBF0
0
0
0