Rainbow Electronics AT89C5132 - Manual (Page 27)

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AT89C5132
4256A–USB–06/03
Program Configuration
Information • Parameter settings
• instruction: LCALL FFF0h.
Notes: 1. Refer to the AT89C5132 datasheet for information on Write operation Timing.
2. No special resources are used by the bootloader during these operations.
Erasing the Flash The AT89C5132 Flash memory is divided into four blocks:
Block 0: from address 0000h to 1FFFh (64 pages)
Block 1: from address 2000h to 3FFFh (64 pages)
Block 2: from address 4000h to 7FFFh (128 pages)
Block 3: from address 8000h to FFFFh (256 pages)
• Parameter settings
• Instruction: LCALL FFF0h.
Note: 1. Refer to the AT89C5132 datasheet for information on Write operation Timing, then
multiply this timing by the number of pages.
2. No special resources are used by the bootloader during these operations.
Starting the Bootloader This routine allows to start at the beginning of the bootloader as after a reset. After call-
ing this routine the regular boot process is performed and the communication must be
opened before any action.
•
No special parameter setting
• Set bit ENBOOT in AUXR1 register
• instruction: LJUMP or LCALL at address F000h
API Name api_command api_dph api_dpl api_value
__api_clr_BLJB 07h – –
(HSB & BFh) |
40h
__api_set_BLJB 07h – – HSB & BFh
__api_clr_X2 07h – –
(HSB & 7Fh) |
80h
__api_set_X2 07h – – HSB & 7Fh
__api_wr_BSB 04h – 00h value to write
__api_wr_SBV 04h – 01h value to write
__api_wr_SSB 04h – 05h value to write
__api_wr_EB 04h – 06h value to write
API Name api_command api_dph api_dpl api_value
__api_erase_block0 00h 00h – –
__api_erase_block1 00h 20h –
__api_erase_block2 00h 40h –
__api_erase_block3 00h 80h –