UPD70F3744GJ-GAE-AX Renesas Electronics America, UPD70F3744GJ-GAE-AX Datasheet - Page 746

• Manufacturer Part Number: UPD70F3744GJ-GAE-AX
• Description: MCU 32BIT V850ES/JX3 144-LQFP
• Manufacturer: Renesas Electronics America
• Series: V850ES/Jx3r

Specifications of UPD70F3744GJ-GAE-AX

• Core Processor: RISC
• Core Size: 32-Bit
• Speed: 32MHz
• Connectivity: CSI, EBI/EMI, I²C, UART/USART
• Peripherals: DMA, LVD, PWM, WDT
• Number Of I /o: 128
• Program Memory Size: 512KB (512K x 8)
• Program Memory Type: FLASH
• Ram Size: 40K x 8
• Voltage - Supply (vcc/vdd): 2.85 V ~ 3.6 V
• Data Converters: A/D 16x10b; 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: -

V850ES/JJ3
24.5 RAM Retention Voltage Detection Operation
(including on power application), the RAMS.RAMF bit is set to 1.
R01UH0016EJ0400 Rev.4.00
Sep 30, 2010
The supply voltage and detected voltage are compared. When the supply voltage drops below the detected voltage
Remarks 1. The RAMF bit is set to 1 if the supply voltage drops under the minimum RAM retention voltage
Supply voltage (V
retention voltage)
RAMS.RAMF bit
(minimum RAM
2. The RAMF bit operates regardless of the RESET pin status.
RESET pin
(2.0 V (TYP.)).
Figure 24-4. Operation Timing of RAM Retention Voltage Detection Function
2.0 V
DD
When power application,
RAMF bit is set
)
(RAMF bit is also cleared)
Initialize RAM
is not retained
RAM data
RAMF bit = 0 is retained regardless
of RESET pin if V
V
Set RAMF bit
DD
CHAPTER 24 LOW-VOLTAGE DETECTOR (LVI)
< 2.0 V detected
DD
> 2.0 V
RAM data is
not retained
(RAMF bit is also cleared)
Initialize RAM
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