Toshiba H1 Series Data Book page 269

3.12 8 Bit Timer (TMRA)
The TMP92CZ26A features 8 channel (TMRA0 to TMRA7) built-in 8-bit timers.
These timers are paired into 4 modules: TMRA01, TMRA23, TMRA45 and TMRA67. Each
module consists of 2 channels and can operate in any of the following 4 operating modes.
• 8-bit interval timer mode
•
16-bit interval timer mode
• 8-bit programmable square wave pulse generation output mode (PPG: Variable duty cycle
with variable period)
• 8-bit pulse width modulation output mode (PWM – Variable duty cycle with constant
period)
Figure 3.12.1 to Figure 3.12.4 show block diagrams for TMRA01 to TMRA67.
Each channel consists of an 8-bit up counter, an 8-bit comparator and an 8-bit timer register.
In addition, a timer flip-flop and a prescaler are provided for each pair of channels.
The operation mode and timer flip-flops are controlled by 5bytes registers SFRs
(Special-function registers).
Each of the 4 modules (TMRA01 to TMRA67) can be operated independently. All modules
operate in the same manner; hence only the operation of TMRA01 is explained here.
The contents of this chapter are as follows.
Module
Specification
Input pin for external
External
clock
pin
Output pin for timer
flip-flop
Timer run register
Timer register
SFR
(Address)
Timer mode register
Timer flip-flop
control register
Table 3.12.1 Registers and Pins for Each Module
TMRA01
TA0IN
(Shared with PC1) (Shared with PC3)
TA1OUT
(Shared with PM1) (Shared with PP1)
TA01RUN (1100H) TA23RUN (1108H)
TA0REG (1102H) TA2REG (110AH)
TA1REG (1103H) TA3REG (110BH)
TA01MOD (1104H) TA23MOD (110CH)
TA1FFCR (1105H) TA3FFCR (110DH)
92CZ26A-266
TMRA23 TMRA45
TA2IN Low-frequency clock
fs
TA3OUT TA5OUT
(Shared with PP2)
TA45RUN (1110H)
TA4REG (1112H)
TA5REG (1113H)
TA45MOD (1114H)
TA5FFCR (1115H)
TMP92CZ26A
TMRA67
Low-frequency clock
fs
TA7OUT
(Shared with PP3)
TA67RUN (1118H)
TA6REG (111AH)
TA7REG (111BH)
TA67MOD (111CH)
TA7FFCR (111DH)