UPD78F0138 NEC, UPD78F0138 Datasheet - Page 189

• Manufacturer Part Number: UPD78F0138
• Description: (UPD78xxxx) 8-Bit Single-Chip Microcontrollers
• Manufacturer: NEC

7.2 Configuration of 8-Bit Timer/Event Counters 50 and 51
(1) 8-bit timer counter 5n (TM5n)
8-bit timer/event counters 50 and 51 include the following hardware.
TM5n is an 8-bit register that counts the count pulses and is read-only.
The counter is incremented in synchronization with the rising edge of the count clock.
In the following situations, the count value is cleared to 00H.
<1> RESET input
<2> When TCE5n is cleared
<3> When TM5n and CR5n match in the mode in which clear & start occurs upon a match of the TM5n and
Timer register
Register
Timer input
Timer output
Control registers
CR5n.
Address: FF16H (TM50), FF1FH (TM51)
(n = 0, 1)
Symbol
TM5n
Item
Table 7-1. Configuration of 8-Bit Timer/Event Counters 50 and 51
CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 50 AND 51
Figure 7-3. Format of 8-Bit Timer Counter 5n (TM5n)
TO5n
8-bit timer counter 5n (TM5n)
8-bit timer compare register 5n (CR5n)
TI5n
Timer clock selection register 5n (TCL5n)
8-bit timer mode control register 5n (TMC5n)
Port mode register 1 (PM1) or port mode register 3 (PM3)
Port register 1 (P1) or port register 3 (P3)
User’s Manual U16228EJ2V0UD
After reset: 00H
Configuration
R
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