MEGA128CAN Datasheet, PDF (347/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

AT90CAN128
Table 136. JTAG Programming Instruction
Set a = address high bits, b = address low bits, H = 0 - Low byte, 1 - High Byte, o = data out, i = data in, x = don’t care
Instruction
TDI Sequence
TDO Sequence
Notes
1a. Chip Erase
1b. Poll for Chip Erase Complete
0100011_10000000
0110001_10000000
0110011_10000000
0110011_10000000
0110011_10000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxox_xxxxxxxx
(2)
2a. Enter Flash Write
2b. Load Address High Byte
0100011_00010000
xxxxxxx_xxxxxxxx
0000111_aaaaaaaa
xxxxxxx_xxxxxxxx
(9)
2c. Load Address Low Byte
0000011_bbbbbbbb
xxxxxxx_xxxxxxxx
2d. Load Data Low Byte
0010011_iiiiiiii
xxxxxxx_xxxxxxxx
2e. Load Data High Byte
2f. Latch Data
0010111_iiiiiiii
0110111_00000000
1110111_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
(1)
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
2g. Write Flash Page
2h. Poll for Page Write Complete
0110111_00000000
0110101_00000000
0110111_00000000
0110111_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
(1)
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxox_xxxxxxxx
(2)
3a. Enter Flash Read
3b. Load Address High Byte
0100011_00000010
xxxxxxx_xxxxxxxx
0000111_aaaaaaaa
xxxxxxx_xxxxxxxx
(9)
3c. Load Address Low Byte
0000011_bbbbbbbb
xxxxxxx_xxxxxxxx
3d. Read Data Low and High Byte
0110010_00000000
0110110_00000000
0110111_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_oooooooo
xxxxxxx_oooooooo
Low byte
High byte
4a. Enter EEPROM Write
4b. Load Address High Byte
0100011_00010001
xxxxxxx_xxxxxxxx
0000111_aaaaaaaa
xxxxxxx_xxxxxxxx
(9)
4c. Load Address Low Byte
0000011_bbbbbbbb
xxxxxxx_xxxxxxxx
4d. Load Data Byte
4e. Latch Data
4f. Write EEPROM Page
4g. Poll for Page Write Complete
0010011_iiiiiiii
0110111_00000000
1110111_00000000
0110111_00000000
0110011_00000000
0110001_00000000
0110011_00000000
0110011_00000000
0110011_00000000
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
(1)
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
(1)
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxxx_xxxxxxxx
xxxxxox_xxxxxxxx
(2)
5a. Enter EEPROM Read
5b. Load Address High Byte
0100011_00000011
xxxxxxx_xxxxxxxx
0000111_aaaaaaaa
xxxxxxx_xxxxxxxx
(9)
4250E–CAN–12/04
347