UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 460

• Manufacturer Part Number: UPD70F3738GF-GAS-AX
• Description: MCU 32BIT V850ES/JX3-L 100-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3-Lr

Specifications of UPD70F3738GF-GAS-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 20MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 84
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 2.2 V ~ 3.6 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: *
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

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11.1 Functions
458
The real-time counter (RTC) has the following features.
• Counting up to 99 years using year, month, day-of-week, day, hour, minute, and second sub-counters provided
• Year, month, day-of-week, day, hour, minute, and second counter display using BCD codes
• Alarm interrupt function
• Constant-period interrupt function (period: 1 month to 0.5 second)
• Interval interrupt function (period: 1.95 ms to 125 ms)
• Pin output function of 1 Hz
• Pin output function of 32.768 kHz
• Pin output function of 512 Hz or 16.384 kHz
• Watch error correction function
• Subclock operation or main clock operation
Notes 1. A BCD (binary coded decimal) code expresses each digit of a decimal number in 4-bit binary format.
Cautions1.
Year, month, day-of-week,
day, hour, minute,
sub-coubters count function
Interrupt function (alarm,
constant-period, interval)
Pin output function
(32.768 kHz, 16.384 kHz,
512 kHz, 1Hz)
Watch error correction
function
2. Use the baud rate generator dedicated to the real-time counter to divide the main clock frequency to
2. If the normal operating mode is restored after entering the RTC backup mode, an error of up
3. The usable RTC functions differ as shown below in the normal operating mode and RTC
32.768 kHz for use.
The watch timer and RTC alternate interrupt signal and therefore cannot be used
simultaneously.
to 1 second might occur for the RTC subcounter.
backup mode.
Function
CHAPTER 11 REAL-TIME COUNTER (
enable
enable
enable
enable
User’s Manual U18953EJ5V0UD
Normal operation mode
Note 2
selectable
μ
PD70F3792, 70F3793)
enable
disable
disable
disable
RTC backup mode
Note 1