UPD78F0413GA-GAM-AX NEC, UPD78F0413GA-GAM-AX Datasheet - Page 277

• 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

9.4.2 Reading/writing real-time counter
Read or write the counter when RWAIT = 1.
Note Be sure to confirm that RWST = 0 before setting STOP mode.
Caution Complete the series of operations of setting RWAIT to 1 to clearing RWAIT to 0 within 1 second.
Remark SEC, MIN, HOUR, WEEK, DAY, MONTH, and YEAR may be read in any sequence.
All the registers do not have to be set and only some registers may be read.
Figure 9-19. Procedure for Reading Real-Time Counter
No
No
Reading MONTH
Reading HOUR
Reading WEEK
Reading YEAR
RWST = 0?
Reading SEC
Reading DAY
Reading MIN
CHAPTER 9 REAL-TIME COUNTER
RWST = 1?
RWAIT = 1
RWAIT = 0
Start
End
User’s Manual U18698EJ1V0UD
Yes
Yes
Note
Checks wait status of counter.
Stops SEC to YEAR counters.
Mode to read and write count values
Reads second count register.
Reads minute count register.
Reads hour count register.
Reads week count register.
Reads day count register.
Reads month count register.
Reads year count register.
Sets counter operation.
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