AT89C5132 Atmel Corporation, AT89C5132 Datasheet - Page 28

• 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

28
AT89C5132
Reset Value = X000 1101b
Bit Number
1
0
Mnemonic
EXTRAM
AO
Bit
Description
External RAM Enable Bit
Set to select the external XRAM when executing MOVX @Ri or MOVX @DPTR
instructions.
Clear to select the internal expanded RAM when executing MOVX @Ri or MOVX
@DPTR instructions.
ALE Output Enable Bit
Set to output the ALE signal only during MOVX instructions.
Clear to output the ALE signal at a constant rate of F
CPU
/3.
4173E–USB–09/07