Z8F0113HJ005EG Datasheet, PDF (161/245 Pages) Zilog, Inc. – High-Performance 8-Bit Microcontrollers

Z8 Encore! XP^® F0823 Series
Product Specification
146
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 85. 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]
Flash Frequency High Byte
FFREQH High byte of the 16-bit Flash Frequency value.
Table 86. 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]
Flash Frequency Low Byte
FFREQL Low byte of the 16-bit Flash Frequency value.
PS024315-1011
PRELIMINARY
Flash Control Register Definitions