UPD78F0552MA-FAA-AX Renesas Electronics America, UPD78F0552MA-FAA-AX Datasheet - Page 402
UPD78F0552MA-FAA-AX
Manufacturer Part Number
UPD78F0552MA-FAA-AX
Description
MCU 8BIT 16-SSOP
Manufacturer
Renesas Electronics America
Series
78K0/Kx2-Lr
Datasheet
1.UPD78F0551MA-FAA-AX.pdf
(822 pages)
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
-
- Current page: 402 of 822
- Download datasheet (6Mb)
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
388
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