W78E58B Winbond, W78E58B Datasheet - Page 12

• Manufacturer Part Number: W78E58B
• Description: 8 BIT MICROCONTROLLER
• Manufacturer: Winbond

SFRAH, SFRAL:
SFRFD:
SFRCN:
SFRCN (C7)
Erase 32KB APROM
Program 32KB APROM
Read 32KB APROM
Erase 4KB LDROM
Program 4KB LDROM
Read 4KB LDROM
3, 2, 1, 0
BIT
7
6
5
4
The programming data for on-chip ROM in programming mode.
The control byte of on-chip ROM programming mode.
MODE
CTRL [3:0]
WFWIN
NAME
OEN
CEN
-
The objective address of on-chip ROM in the in-system programming mode.
SFRAH contains the high-order byte of address, SFRAL contains the low-order
byte of address.
Reserve.
On-chip ROM bank select for in-system programming.
0: 32K bytes ROM bank is selected as destination for re-programming.
1: 4K bytes ROM bank is selected as destination for re-programming.
ROM output enable.
ROM chip enable.
The flash control signals
WFWIN
0
0
0
1
1
1
CTRL<3:0>
0010
0001
0000
0010
0001
0000
- 12 -
OEN
1
1
0
1
1
0
FUNCTION
CEN
0
0
0
0
0
0
SFRAH, SFRAL
Address in
Address in
Address in
Address in
X
X
W78E58B
Data out
Data out
SFRFD
Data in
Data in
X
X