AT89C5131A-L Atmel Corporation, AT89C5131A-L Datasheet - Page 28

• 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

Program
Configuration
Information
Erasing the Flash
28
AT89C5131A USB Bootloader
•
•
Notes:
The AT89C5131A Flash memory is divided in several blocks:
Block 0: from address 0000h to 1FFFh
Block 1: from address 2000h to 3FFFh
Block 2: from address 4000h to 7FFFh
These three blocks contain 128 pages.
•
•
Notes:
Parameter settings
instruction: LCALL FFC0h.
Parameter settings
instruction: LCALL FFC0h.
API Name
__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_wr_BSB
__api_wr_SBV
__api_wr_P1_CF
__api_wr_P3_CF
__api_wr_P4_CF
__api_wr_SSB
__api_wr_EB
API Name
__api_erase_block0
__api_erase_block1
__api_erase_block2
1. See in the T89C51CC01 datasheet the time that a write operation takes.
2. No special resources are used by the bootloader during these operations.
1. See the AT89C5131A datasheet for the time that a write operation takes and this time must
2. No special resources are used by the bootloader during these operations.
multiply by the number of pages.
api_command
api_command
07h
07h
07h
07h
07h
07h
07h
07h
04h
04h
04h
04h
04h
04h
04h
00h
00h
00h
api_dph
api_dph
00h
20h
40h
api_dpl
api_dpl
00h
01h
02h
03h
04h
05h
06h
(HSB & DFh) |
(HSB & BFh) |
(HSB & 7Fh) |
(HSB & EFh) |
value to write
value to write
value to write
value to write
value to write
value to write
value to write
HSB & DFh
HSB & BFh
HSB & 7Fh
HSB & EFh
api_value
api_value
4287E–USB–04/08
40h
80h
20h
10h