UPD78F0552MA-FAA-AX Renesas Electronics America, UPD78F0552MA-FAA-AX Datasheet - Page 400

• Manufacturer Part Number: UPD78F0552MA-FAA-AX
• Description: MCU 8BIT 16-SSOP
• Manufacturer: Renesas Electronics America
• Series: 78K0/Kx2-Lr

Specifications of UPD78F0552MA-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: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 768 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 Real-Time Counter Operation
10.4.1 Starting operation of real-time counter
R01UH0028EJ0400 Rev.4.00
Sep 27, 2010
Notes 1.
2.
3.
First set RTCEN to 1, while oscillation of the subsystem clock (f
Set up SUBCUD only if the watch error must be corrected. For details about how to calculate the
correction value, see 10.4.8 Example of watch error correction of real-time counter.
Confirm the procedure described in 10.4.2 Shifting to STOP mode after starting operation when
shifting to STOP mode without waiting for INTRTC = 1 after RTCE = 1.
Figure 10-19. Procedure for Starting Operation of Real-Time Counter
No
Setting SEC (clearing RSUBC)
Clearing MK flags of interrupt
Clearing IF flags of interrupt
Setting AMPM, CT2 to CT0
Setting SUBCUD
Reading counter
RTCEN = 1
Setting MONTH
Setting HOUR
Setting WEEK
RTCE = 1
Setting YEAR
INTRTC = 1?
Setting DAY
Setting MIN
RTCE = 0
Start
Yes
Note 3
Note 1
Note 2
Supplies input clock.
Stops counter operation.
Selects 12-/24-hour system and interrupt (INTRTC).
Sets second count register.
Sets minute count register.
Sets week count register.
Sets day count register.
Sets month count register.
Sets year count register.
Sets watch error correction register.
Clears interrupt request flags (RTCIF, RTCIIF).
Clears interrupt mask flags (RTCMK, RTCIMK).
Sets hour count register.
Starts counter operation.
CHAPTER 10 REAL-TIME COUNTER
SUB
) is stable.
386