UPD78F0551MA-FAA-AX Renesas Electronics America, UPD78F0551MA-FAA-AX Datasheet - Page 402

• Manufacturer Part Number: UPD78F0551MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0551MA-FAA-AX

• Core Processor: 78K/0
• Core Size: 8-Bit
• Speed: 10MHz
• Connectivity: I²C, LIN, UART/USART
• Peripherals: LVD, POR, PWM, WDT
• Number Of I /o: 9
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

78K0/Kx2-L
10.4.3 Reading/writing real-time counter
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
Read or write the counter after setting 1 to RWAIT first.
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 10-21. Procedure for Reading Real-Time Counter
No
No
Reading MONTH
Reading HOUR
Reading WEEK
Reading YEAR
RWST = 0?
Reading SEC
Reading DAY
Reading MIN
RWST = 1?
RWAIT = 1
RWAIT = 0
Start
End
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.
Sets counter operation.
Reads hour count register.
Reads week count register.
Reads day count register.
Reads month count register.
Reads year count register.
CHAPTER 10 REAL-TIME COUNTER
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