W742E816 Просмотр технического описания (PDF) - Winbond

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W742E816

4-BIT MICROCONTROLLER

Winbond 

W742E/C816

Deleted: SA5505

Deleted: W742C811

0110 = ROM page 6 (3000H − 37FFH)

0111 = ROM page 7 (3800H − 3FFFH)

1110 = ROM page E (7000H − 77FFH)

1111 = ROM page F (7800H − 7FFFH)

5.3.2 ROM Addressing Mode

1. Direct Addressing

Bit 14-0 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

PC

A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

2. Far Jump or Call

Bit 14-0 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

PC

P3 P2 P1 P0 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

P0-3 is ROM page register(ROMPR)

Example:

MOV ROMPR, #I

JMP Label_A

or

MOV ROMPR, #I

CALL SUB_A

3. Conditional JMP

Bit 14-0 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0

PC

0 0 0 0 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0

jmp into the same page

Example:

JB0

JB1

JB2

JB3

JZ

JNZ

JC

JNC

Lable_A0

Lable_A1

Lable_A2

Lable_A3

Label_Az

Label_Anz

Label_Ac

Label_Anc

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