HD404318 Datasheet, PDF (33/68 Pages) Hitachi Semiconductor – 4-bit HMCS400-series microcomputer

HD404318 Series
Timers
The MCU has three built-in timers: A, B, and C. The functions of each timer are listed in table 7.
Timer A
Timer A is an 8-bit free-running timer that has the following features:
• One of eight internal clocks can be selected from prescaler S according to the setting of timer mode
register A (TMA: $008)
• An interrupt request can be generated when timer counter A (TCA) overflows
• Input clock frequency must not be modified during timer A operation
Table 7 Timer Functions
Functions
Clock source
Timer functions
Timer output
Prescaler S
External event
Free-running
Event counter
Reload
Watchdog
Input capture
PWM
Timer A
Available
—
Available
—
—
—
—
—
Timer B
Available
Available
Available
Available
Available
—
Available
—
Timer C
Available
—
Available
—
Available
Available
—
Available
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