w78e516b Winbond Electronics Corp America, w78e516b Datasheet - Page 15

• Manufacturer Part Number: w78e516b
• Description: 8-bit Microcontroller
• Manufacturer: Winbond Electronics Corp America

SFRAH, SFRAL: The objective address of on-chip Flash EPROM in the in-system programming
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)
Erase 64KB APROM
Program 64KB APROM
Read 64KB APROM
Erase 4KB LDROM
Program 4KB LDROM
Read 4KB LDROM
3, 2, 1, 0
BIT
7
6
5
4
MODE
CTRL[3:0]
WFWIN
NAME
OEN
CEN
-
mode. SFRFAH contains the high-order byte of address, SFRFAL contains the
low-order byte of address.
Reserve.
On-chip Flash EPROM bank select for in-system programming.
Flash EPROM output enable.
Flash EPROM chip enable.
The flash control signals
WFWIN
= 0: 64K bytes Flash EPROM bank is selected as destination for re-
= 1: 4K bytes Flash EPROM bank is selected as destination for re-
programming.
programming.
0
0
0
1
1
1
CTRL<3:0>
0010
0001
0000
0010
0001
0000
- 15 -
OEN
1
1
0
1
1
0
FUNCTION
CEN
Publication Release Date: April 22, 2008
0
0
0
0
0
0
SFRAH, SFRAL
Address in
Address in
Address in
Address in
X
X
W78E516B
Revision A12
Data out
Data out
SFRFD
Data in
Data in
X
X