W78E516B_06 Datasheet, PDF (15/37 Pages) Winbond – 8-BIT MICROCONTROLLER

W78E516B
SFRAH, SFRAL: The objective address of on-chip Flash EPROM in the in-system programming
mode. SFRFAH contains the high-order byte of address, SFRFAL contains the
low-order byte of address.
SFRFD: The programming data for on-chip Flash EPROM in programming mode.
SFRCN: The control byte of on-chip Flash EPROM programming mode.
SFRCN (C7)
BIT
7
6
5
4
3, 2, 1, 0
NAME
-
WFWIN
OEN
CEN
CTRL[3:0]
FUNCTION
Reserve.
On-chip Flash EPROM bank select for in-system programming.
= 0: 64K bytes Flash EPROM bank is selected as destination for re-
programming.
= 1: 4K bytes Flash EPROM bank is selected as destination for re-
programming.
Flash EPROM output enable.
Flash EPROM chip enable.
The flash control signals
MODE
Erase 64KB APROM
Program 64KB APROM
Read 64KB APROM
Erase 4KB LDROM
Program 4KB LDROM
Read 4KB LDROM
WFWIN
0
0
0
1
1
1
CTRL<3:0>
0010
0001
0000
0010
0001
0000
OEN
1
1
0
1
1
0
CEN
0
0
0
0
0
0
SFRAH, SFRAL
X
Address in
Address in
X
Address in
Address in
SFRFD
X
Data in
Data out
X
Data in
Data out
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Publication Release Date: December 4, 2006
Revision A11