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W742E816 Datasheet(PDF) 10 Page - Winbond

Part # W742E816
Description  4-BIT MICROCONTROLLER
Download  58 Pages
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Manufacturer  WINBOND [Winbond]
Direct Link  http://www.winbond.com
Logo WINBOND - Winbond

W742E816 Datasheet(HTML) 10 Page - Winbond

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W742E/C816
- 10 -
0110 = ROM page 6 (3000H
− 37FFH)
1110 = ROM page E (7000H
− 77FFH)
0111 = ROM page 7 (3800H
− 3FFFH)
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
A14 A13 A12 A11 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
PC
2. Far Jump or Call
Bit 14-0
14 13 12 11 10
9
8 7 6 5
4 3
2 1
0
P3 P2 P1 P0 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
PC
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
0
0
0
0 A10 A9 A8 A7 A6 A5 A4 A3 A2 A1 A0
PC
jmp into the same page
Example:
JB0
Lable_A0
JB1
Lable_A1
JB2
Lable_A2
JB3
Lable_A3
JZ
Label_Az
JNZ
Label_Anz
JC
Label_Ac
JNC
Label_Anc
Deleted: SA5505
Deleted: W742C811


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