UPD78F0537DGA(T)-9EV-A NEC, UPD78F0537DGA(T)-9EV-A Datasheet - Page 246

• Manufacturer Part Number: UPD78F0537DGA(T)-9EV-A
• Description: 8BIT MCU, 128K FLASH, 7KB RAM, SMD
• Manufacturer: NEC

Specifications of UPD78F0537DGA(T)-9EV-A

• Controller Family/series: UPD78
• No. Of I/o's: 55
• Ram Memory Size: 7KB
• Cpu Speed: 20MHz
• No. Of Timers: 8
• No. Of Pwm: RoHS Compliant
• Core Size: 8bit
• Program Memory Size: 128KB
• Oscillator Type: External, Internal

<R>
(2) Setting LVS0n and LVR0n
246
Set LVS0n and LVR0n using the following procedure.
Caution Be sure to set LVS0n and LVR0n following steps <1>, <2>, and <3> above.
<1> The TO0n output goes high when LVS0n and LVR0n = 10.
<2> The TO0n output goes low when LVS0n and LVR0n = 01 (the pin output remains unchanged from the high
<3> The timer starts operating when TMC0n3 and TMC0n2 are set to 01, 10, or 11. Because LVS0n and
<4> The TO0n output level is inverted each time an interrupt signal (INTTM00n) is generated.
Remark n = 0:
level even if LVS0n and LVR0n are cleared to 00).
LVR0n were set to 10 before the operation was started, the TO0n output starts from the high level. After
the timer starts operating, setting LVS0n and LVR0n is prohibited until TMC0n3 and TMC0n2 = 00
(disabling the timer operation).
Step <2> can be performed after <1> and before <3>.
n = 0, 1:
Setting
Setting
µ
µ
Figure 7-58. Example of Flow for Setting LVS0n and LVR0n Bits
Setting
PD78F0531, 78F0532, 78F0533
PD78F0534, 78F0535, 78F0536, 78F0537, 78F0537D
TOC0n.OSPE0n, TOC0n4, TOC0n1
(TMC0n3, TMC0n2)
Setting
CHAPTER 7 16-BIT TIMER/EVENT COUNTERS 00 AND 01
TOC0n.LVR0n bit
TMC0n.TMC0n3, TMC0n2
TOC0n.LVS0n bit
INTTM00n signal
TOC0n.LVS0n, LVR0n
Figure 7-59. Timing Example of LVR0n and LVS0n
Operable bits
TO0n output
TOC0n.TOE0n
User’s Manual U17260EJ6V0UD
bit
00
bits
bits
<1>
bits
<2> <1> <3> <4>
<1> Setting of timer output operation
<2> Setting of timer output F/F
<3> Enabling timer operation
01, 10, or 11
<4>
<4>