UPD78F9418A NEC, UPD78F9418A Datasheet - Page 115

• Manufacturer Part Number: UPD78F9418A
• Description: (UPD7894xxA) 8-Bit Single Chip Microcontrollers
• Manufacturer: NEC

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7.2 Configuration of 8-Bit Timer/Event Counters 00 to 02
2
2
1/f
Timer counter
Register
Timer output
Control registers
3
7
(2)
(3)
/f
/f
Remarks 1. f
8-bit timer/event counters 00 to 02 consist of the following hardware.
XT
X
X
(1.6 µ s)
(25.6 µ s)
(30.5 µ s)
External event counter
The number of pulses of an externally input signal can be measured.
Square-wave output
A square wave of any frequency can be output.
Minimum Pulse Width
2. f
3. The parenthesized values apply to operation at f
Item
X
XT
:
: Subsystem clock oscillation frequency
Main system clock oscillation frequency
Table 7-5. Configuration of 8-Bit Timer/Event Counters 00 to 02
Table 7-4. Square-Wave Output Range of 8-Bit Timer 02
CHAPTER 7 8-BIT TIMER/EVENT COUNTERS 00 TO 02
8 bits × 3 (TM00, TM01, and TM02)
Compare register: 8 bits × 3 (CR00, CR01, and CR02)
1 (TO2)
Port mode register 2 (PM2)
8-bit timer mode control registers 00, 01, and 02 (TMC00, TMC01, and TMC02)
2
2
2
11
15
8
/f
/f
/f
XT
X
X
(409.6 µ s)
(6.55 ms)
(7.81 ms)
User’s Manual U13952EJ3V0UD
Maximum Pulse Width
X
= 5.0 MHz or f
Configuration
2
2
1/f
3
7
/f
/f
XT
XT
X
X
(25.6 µ s)
(30.5 µ s)
(1.6 µ s)
= 32.768 kHz.
Resolution
115