Datasheet

User’s Manual U18698EJ1V0UD
218
CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50, 51, AND 52
7.1 Functions of 8-Bit Timer/Event Counters 50, 51, and 52
8-bit timer/event counters 50, 51 and 52 have the following functions.
• Interval timer
• External event counter
Note
Note TM52 only. TM52 and TM00 can be connected in cascade to be used as an external 24-bit event counter.
Also, the external event input of TM52 can be input enable-controlled via TMH2. For detail, see CHAPTER
6 16-BIT TIMER/EVENT COUNTER 00.
7.2 Configuration of 8-Bit Timer/Event Counters 50, 51, and 52
8-bit timer/event counters 50, 51, and 52 include the following hardware.
Table 7-1. Configuration of 8-Bit Timer/Event Counters 50, 51, and 52
Item Configuration
Timer register 8-bit timer counter 5n (TM5n)
Register 8-bit timer compare register 5n (CR5n)
Timer input TI5n
Control registers
Timer clock selection register 5n (TCL5n)
8-bit timer mode control register 5n (TMC5n)
Input switch control register (ISC)
Port mode register 3 (PM3)
Port register 3 (P3)
Remark n = 0 to 2
Figures 7-1 to 7-3 show the block diagrams of 8-bit timer/event counters 50, 51, and 52.