AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 32

• Manufacturer Part Number: AT89C5131A-L
• Manufacturer: Atmel Corporation

Specifications of AT89C5131A-L

• Flash (kbytes): 32 Kbytes
• Max. Operating Frequency: 48 MHz
• Cpu: 8051-12C
• Max I/o Pins: 34
• Usb Transceiver: 1
• Usb Speed: Full Speed
• Usb Interface: Device
• Spi: 1
• Twi (i2c): 1
• Uart: 1
• Sram (kbytes): 1.25
• Eeprom (bytes): 1024
• Self Program Memory: API
• Operating Voltage (vcc): 3.0 to 3.6
• Timers: 4
• Isp: UART/USB
• Watchdog: Yes

Appendix-2
Table 14. API Summary
32
Function Name
__api_rd_code_byte
__api_wr_code_byte
__api_wr_code_page
__api_erase block0
__api_erase block1
__api_erase block2
__api_rd_HSB
__api_clr_BLJB
__api_set_BLJB
__api_clr_X2
__api_set_X2
__api_clr_OSCON1
__api_set_OSCON1
__api_clr_OSCON0
__api_set_OSCON0
__api_rd_BSB
__api_wr_BSB
__api_rd_SBV
__api_wr_SBV
__api_erase_SBV
__api_rd_P1_CF
__api_wr_P1_CF
__api_rd_P3_CF
__api_wr_P3_CF
__api_rd_P4_CF
__api_wr_P4_CF
__api_rd_SSB
__api_wr_SSB
__api_rd_EB
__api_wr_EB
__api_rd_manufacturer
__api_rd_device_id1
AT89C5131A USB Bootloader
Bootloader
Execution
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
yes
no
api_command
0Dh
0Dh
00h
00h
00h
08h
07h
07h
07h
07h
07h
07h
07h
07h
05h
04h
05h
04h
04h
05h
04h
05h
04h
05h
04h
05h
04h
05h
04h
05h
05h
api_dph
00h
20h
40h
api_dpl
00h
00h
00h
01h
01h
01h
02h
02h
03h
03h
04h
04h
05h
05h
06h
06h
30h
31h
(HSB & BFh) | 40h
(HSB & DFh) | 20h
(HSB & EFh) | 10h
(HSB & 7Fh) | 80h
return value
HSB & DFh
return value
return value
return value
return value
return value
return value
return value
return value
return value
HSB & BFh
HSB & 7Fh
HSB & EFh
4287E–USB–04/08
api_value
value
value
value
value
value
value
value
FFh