AT89C51IC2 Atmel Corporation, AT89C51IC2 Datasheet - Page 82
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AT89C51IC2
Manufacturer Part Number
AT89C51IC2
Description
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
AT89C51IC2-RLTIL
Manufacturer:
ATMEL
Quantity:
640
Company:
Part Number:
AT89C51IC2-RLTIL
Manufacturer:
ATMEL
Quantity:
4 116
Company:
Part Number:
AT89C51IC2-UL
Manufacturer:
XR
Quantity:
2
Company:
Part Number:
AT89C51IC2-UM
Manufacturer:
Atmel
Quantity:
5
82
AT89C51IC2
Table 62. KBE Register
KBE-Keyboard Input Enable Register (9Dh)
Reset Value= 0000 0000b
Number
KBE7
Bit
7
7
6
5
4
3
2
1
0
Mnemonic Description
KBE6
KBE7
KBE6
KBE5
KBE4
KBE3
KBE2
KBE1
KBE0
Bit
6
Keyboard line 7 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.7 bit in KBF register to generate an interrupt request.
Keyboard line 6 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.6 bit in KBF register to generate an interrupt request.
Keyboard line 5 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.5 bit in KBF register to generate an interrupt request.
Keyboard line 4 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.4 bit in KBF register to generate an interrupt request.
Keyboard line 3 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.3 bit in KBF register to generate an interrupt request.
Keyboard line 2 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.2 bit in KBF register to generate an interrupt request.
Keyboard line 1 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.1 bit in KBF register to generate an interrupt request.
Keyboard line 0 Enable bit
Cleared to enable standard I/O pin.
Set to enable KBF.0 bit in KBF register to generate an interrupt request.
KBE5
5
KBE4
4
KBE3
3
KBE2
2
KBE1
1
4301D–8051–02/08
KBE0
0