AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 153

• Manufacturer Part Number: AT89C5132
• Manufacturer: Atmel Corporation

Specifications of AT89C5132

• Flash (kbytes): 64 Kbytes
• Max. Operating Frequency: 20 MHz
• Cpu: 8051-12C
• Max I/o Pins: 44
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Uart: 1
• Adc Channels: 2
• Adc Resolution (bits): 10
• Adc Speed (ksps): 22.7
• Sram (kbytes): 2.25
• Self Program Memory: API
• Operating Voltage (vcc): 2.7 to 3.6
• Timers: 2
• Isp: UART/USB
• Watchdog: Yes

22.2.0.1
4173E–USB–09/07
KBCON (S:A3h) – Keyboard Control Register
Reset Value = 0000 1111b
Table 102. KBSTA Register
KBSTA (S:A4h) – Keyboard Control and Status Register
Reset Value = 0000 0000b
Bit Number
Bit Number
KINL3
KPDE
7 - 4
3 - 0
6 - 4
3 - 0
7
7
7
Mnemonic
Mnemonic
KINM3:0
KINL3:0
KINF3:0
KINL2
KPDE
Bit
Bit
6
6
-
-
Description
Keyboard Input Level Bit
Set to enable a high level detection on the respective KIN3:0 input.
Clear to enable a low level detection on the respective KIN3:0 input.
Keyboard Input Mask Bit
Set to prevent the respective KINF3:0 flag from generating a keyboard interrupt.
Clear to allow the respective KINF3:0 flag to generate a keyboard interrupt.
Description
Keyboard Power Down Enable Bit
Set to enable exit of power down mode by the keyboard interrupt.
Clear to disable exit of power down mode by the keyboard interrupt.
Reserved
The values read from these Bits are always 0. Do not set these Bits.
Keyboard Input Interrupt Flag
Set by hardware when the respective KIN3:0 input detects a programmed level.
Cleared when reading KBSTA.
KINL1
5
5
-
KINL0
4
4
-
KINM3
KINF3
3
3
KINM2
KINF2
2
2
AT89C5132
KINM1
KINF1
1
1
KINM0
KINF0
0
0
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