UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 246

• 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

8.4 Operation of 8-Bit Timers H0, H1 and H2
8.4.1 Operation as interval timer/square-wave output
is generated and the 8-bit timer counter Hn is cleared to 00H.
the CMP1n register is not detected even if the CMP1n register is set, timer output is not affected.
is output from TOHn.
external output are available.
246
TMHMDn
When the 8-bit timer counter Hn and compare register 0n (CMP0n) match, an interrupt request signal (INTTMHn)
Compare register 1n (CMP1n) is not used in interval timer mode. Since a match of the 8-bit timer counter Hn and
By setting bit 0 (TOENn) of timer H mode register n (TMHMDn) to 1, a square wave of any frequency (duty = 50%)
The timer output of TMH2 can only be used as an external event input enable signal of TM52. Note, no pins for
<1> Set each register.
<2> Count operation starts when TMHEn = 1.
<3> When the values of the 8-bit timer counter Hn and the CMP0n register match, the INTTMHn signal is
<4> Subsequently, the INTTMHn signal is generated at the same interval. To stop the count operation, clear
Remarks 1. For the setting of the output pin, see 8.3 (3) Port mode register 3 (PM3).
Setting
(i) Setting timer H mode register n (TMHMDn)
(ii) CMP0n register setting
generated and the 8-bit timer counter Hn is cleared to 00H.
TMHEn to 0.
TMHEn
The interval time is as follows if N is set as a comparison value.
2. For how to enable the INTTMHn signal interrupt, see CHAPTER 17 INTERRUPT FUNCTIONS.
3. n = 0 to 2, however, TOH0 and TOH1 only for TOHn
0
Figure 8-11. Register Setting During Interval Timer/Square-Wave Output Operation
Interval time = (N +1)/f
CKSn2
0/1
CKSn1
0/1
CHAPTER 8 8-BIT TIMERS H0, H1, AND H2
CNT
CKSn0
0/1
User’s Manual U18698EJ1V0UD
TMMDn1
0
TMMDn0 TOLEVn
0
0/1
TOENn
0/1
Timer output setting
Default setting of timer output level
Interval timer mode setting
Count clock (f
Count operation stopped
CNT
) selection