Z80180 Datasheet, PDF (174/326 Pages) Zilog, Inc. – Z8018x Family MPU

Z 8018x Fam ily
M PU Us e r M anual
159
Timer Data Register 0L (TMDR0L: 0CH)
Bit
7
6
5
4
3
2
1
0
Bit/Field
Timer Data
R/W
R/W
Reset
0
Note: R = Read W = Write X = Indeterminate ? = Not Applicable
Timer Data Register 0H (TMDR0H: 0DH)
Bit
7
6
5
4
3
2
1
0
Bit/Field
Timer Data
R/W
R/W
Reset
0
Note: R = Read W = Write X = Indeterminate ? = Not Applicable
Timer Reload Register (RLDR: I/O Address = CH0: 0EH,
0FH, CHI, 16H, 17H)
PRT0 and PRT1 each contain 16-bit Timer Reload Registers (RLDR).
RLDR0 and RLDR1 are each accessed as low and high byte registers
(RLDR0H, RLDR0L and RLDR1H, RLDR1L). During RESET, RLDR0
and RLDR1 are set to FFFFH
When the TMDR counts down to 0, it is automatically reloaded with the
contents of RLDR.
UM005001-ZMP0400