UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 214

• Manufacturer Part Number: UPD78F0413GA-GAM-AX
• Description: 8BIT UC, 32K FLASH, 1KB RAM, LCD
• Manufacturer: NEC

Specifications of UPD78F0413GA-GAM-AX

• Controller Family/series: UPD78F
• No. Of I/o's: 30
• Ram Memory Size: 1024Byte
• Cpu Speed: 10MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 32KB
• Oscillator Type: External, Internal

6.6 Cautions for 16-Bit Timer/Event Counter 00
(1) Restrictions for each channel of 16-bit timer/event counter 00
(3) Setting of CR000 and CR010 (clear & start mode entered upon a match between TM00 and CR000)
214
(2) Timer start errors
As interval timer
As square wave output
As external event counter
As clear & start mode entered by
TI000 pin valid edge input
As free-running timer
As PPG output
As one-shot pulse output
As pulse width measurement
Table 6-3 shows the restrictions for each channel.
An error of up to one clock may occur in the time required for a match signal to be generated after timer start.
This is because counting TM00 is started asynchronously to the count pulse.
Set a value other than 0000H to CR000 and CR010 (TM00 cannot count one pulse when it is used as an external
event counter).
Operation
Table 6-3. Restrictions for Each Channel of 16-Bit Timer/Event Counter 00
TM00 count value
Count pulse
Using timer output (TO00) is prohibited when detection of the valid edge of the TI010 pin is
used. (TOC00 = 00H)
0000H
Setting the same value to CR000 and CR010 is prohibited.
Using timer output (TO00) is prohibited (TOC00 = 00H)
CHAPTER 6 16-BIT TIMER/EVENT COUNTER 00
Figure 6-59. Start Timing of TM00 Count
CR010 < CR000
Timer start
User’s Manual U18698EJ1V0UD
0000H
FFFFH
0001H
0002H
Restriction
0003H
0004H