Z8FMC16100 Series Flash MCU
Product Specification
103
causes the value in T0L to be stored in a temporary holding register. A Read from T0L
always returns this temporary register when the timer is enabled. When the timer is dis-
abled, Reads from the T0L are direct from this temporary register.
Writing to the Timer High and Low Byte registers while the timer is enabled is not rec-
ommended. There are no temporary holding registers available for Write operations;
therefore, simultaneous 16-bit Writes are not possible.
Caution:
If either the Timer High or Low Byte registers are written during counting, the 8-bit writ-
ten value is placed in the counter (High or Low Byte) at the next clock edge. The counter
continues counting from the new value.
Table 58. Timer 0 High Byte Register (T0H)
BITS
FIELD
RESET
R/W
7
6
5
4
3
3
2
2
1
1
0
0
TH
00H
R/W
F00H
ADDR
Table 59. Timer 0 Low Byte Register (T0L)
BITS
FIELD
RESET
R/W
7
6
5
4
TL
01H
R/W
F01H
ADDR
TH and TL—Timer High and Low Bytes
These two bytes, {TH[7:0], TL[7:0]}, contain the current 16-bit timer count value.
PS024604-1005
P R E L I M I N A R Y
Timer 0 High and Low Byte Registers
ZILOG [ ZILOG, INC. ]
