Z8F042ASJ020EG View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z8F042ASJ020EG' PDF : 282 Pages View PDF
Z8 Encore! XP® F082A Series
Product Specification
158
Caution: The Flash Frequency High and Low Byte registers must be loaded with the correct value
to ensure proper operation of the device. Also, Flash programming and erasure is not sup-
ported for system clock frequencies below 20 kHz or above 20 MHz.
Table 84. Flash Frequency High Byte Register (FFREQH)
Bit
7
6
5
4
3
2
1
0
Field
FFREQH
RESET
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Address
FFAH
Bit
Description
[7:0]ï€
Flash Frequency High Byte
FFREQH High byte of the 16-bit Flash Frequency value.
Table 85. Flash Frequency Low Byte Register (FFREQL)
Bit
7
6
5
4
3
2
1
0
Field
FFREQL
RESET
0
R/W
R/W
Address
FFBH
Bit
Description
[7:0]ï€
Flash Frequency Low Byte
FFREQL Low byte of the 16-bit Flash Frequency value.
PS022827-1212
PRELIMINARY
Flash Control Register Definitions
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