Z51F0410 Datasheet, PDF (159/184 Pages) Zilog, Inc. – Z8051 Series 8-Bit Microcontrollers

Z51F0410
Product Specification
8.2.2 Register description for Flash and EEPROM
FEMR (Flash and EEPROM Mode Register) : EAH
7
FSEL
R/W
6
ESEL
R/W
5
PGM
R/W
4
ERASE
R/W
3
PBUFF
R/W
2
OTPE
R/W
1
0
VFY
FEEN
R/W
R/W
Initial value : 00H
FSEL
ESEL
PGM
ERASE
PBUFF
OTPE
VFY
FEEN
Select flash memory.
0
Deselect flash memory
1
Select flash memory
Select data EEPROM
0
Deselect data EEPROM
1
Select data EEPROM
Enable program or program verify mode with VFY
0
Disable program or program verify mode
1
Enable program or program verify mode
Enable erase or erase verify mode with VFY
0
Disable erase or erase verify mode
1
Enable erase or erase verify mode
Select page buffer
0
Deselect page buffer
1
Select page buffer
Select OTP area instead of program memory
0
Deselect OTP area
1
Select OTP area
Set program or erase verify mode with PGM or ERASE
Program Verify: PGM=1, VFY=1
Erase Verify: ERASE=1, VFY=1
Enable program and erase of Flash and data EEPROM. When inactive, it
is possible to read as normal mode
0
Disable program and erase
1
Enable program and erase
FECR (Flash and EEPROM Control Register) : EBH
7
6
5
4
3
2
1
0
AEF
AEE
EXIT1
EXIT0
WRITE
READ
nFERST
nPBRST
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Initial value : 03H
AEF
AEE
EXIT[1:0]
Enable flash bulk erase mode
0
Disable bulk erase mode of Flash memory
1
Enable bulk erase mode of Flash memory
Enable data EEPROM bulk erase mode
0
Disable bulk erase mode of data EEPROM
1
Enable bulk erase mode of data EEPROM
Exit from program mode. It is cleared automatically after 1 clock
EXIT1
EXIT0 Description
0
0
Don’t exit from program mode
0
1
Don’t exit from program mode
PS029502-0212
PRELIMINARY
156