UPD78F9222MC(T)-5A4-A NEC, UPD78F9222MC(T)-5A4-A Datasheet - Page 108

• Manufacturer Part Number: UPD78F9222MC(T)-5A4-A
• Description: 8BIT MCU, 4K FLASH, 256B RAM, 78F9222
• Manufacturer: NEC

Specifications of UPD78F9222MC(T)-5A4-A

• Controller Family/series: UPD78
• No. Of I/o's: 17
• Ram Memory Size: 256Byte
• Cpu Speed: 10MHz
• No. Of Timers: 4
• No. Of: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 4KB
• Oscillator Type: External, Internal

6.4.4
bit timer capture/compare register 000 (CR000).
bit 0 (TOE00) and bit 1 (TOC001) of 16-bit timer output control register 00 (TOC00) to 1. This enables a square wave
with any selected frequency to be output.
108
The basic operation setting procedure is as follows.
<1> Set the count clock by using the PRM00 register.
<2> Set the CRC00 register (see Figure 6-27 for the set value).
<3> Set the TOC00 register (see Figure 6-27 for the set value).
<4> Set any value to the CR000 register (0000H cannot be set).
<5> Set the TMC00 register to start the operation (see Figure 6-27 for the set value).
Caution Changing the CR000 setting during TM00 operation may cause a malfunction. To change the
Remarks 1. For the setting of the TO00 pin, see 6.3 (5) Port mode register 3 (PM3).
A square wave with any selected frequency can be output at intervals determined by the count value preset to 16-
The TO00 pin output status is reversed at intervals determined by the count value preset to CR000 + 1 by setting
PRM00
CRC00
Setting
Square-wave output operation
ES110
0/1
7
0
2. For how to enable the INTTM000 interrupt, see CHAPTER 12 INTERRUPT FUNCTIONS.
setting, refer to 6.5 Cautions Related to 16-bit Timer/Event Counter 00 (17) Changing compare
register during timer operation.
ES100
0/1
6
0
Figure 6-27. Control Register Settings in Square-Wave Output Mode (1/2)
ES010
0/1
5
0
ES000
0/1
4
0
(b) Capture/compare control register 00 (CRC00)
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
(a) Prescaler mode register 00 (PRM00)
3
0
3
0
CRC002
0/1
2
0
User’s Manual U16898EJ5V0UD
CRC001
PRM001
0/1
0/1
CRC000
PRM000
0/1
0
Selects count clock.
Setting invalid (setting “10” is prohibited.)
Setting invalid (setting “10” is prohibited.)
CR000 used as compare register