Chapter 7 8-Bit Timer/Event Counters 50 And 51; Functions Of 8-Bit Timer/Event Counters 50 And 51 - NEC mPD780024AS Series Preliminary User's Manual

CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51

7.1 Functions of 8-Bit Timer/Event Counters 50 and 51

8-bit timer/event counters 50 and 51 (TM50, TM51) have the following two modes.
• Mode using 8-bit timer/event counters alone (single mode)
• Mode using the cascade connection (16-bit resolution: cascade connection mode)
These two modes are described next.
(1) Mode using 8-bit timer/event counters alone (single mode)
The timer operates as an 8-bit timer/event counter.
It has the following functions.
• Interval timer
• External event counter
• Square wave output
• PWM output
(2) Mode using the cascade connection (16-bit resolution: cascade connection mode)
The timer operates as a 16-bit timer/event counter by connecting in cascade.
It has the following functions.
• Interval timer with 16-bit resolution
• External event counter with 16-bit resolution
• Square wave output with 16-bit resolution
Figures 7-1 and 7-2 show 8-bit timer/event counter block diagrams.
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