UPD70F3738GF-GAS-AX Renesas Electronics America, UPD70F3738GF-GAS-AX Datasheet - Page 850
UPD70F3738GF-GAS-AX
Manufacturer Part Number
UPD70F3738GF-GAS-AX
Description
MCU 32BIT V850ES/JX3-L 100-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3-Lr
Datasheet
1.UPD70F3737GF-GAS-AX.pdf
(1071 pages)
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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Company:
Part Number:
UPD70F3738GF-GAS-AX
Manufacturer:
Renesas Electronics America
Quantity:
10 000
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23.7 Subclock Operation Mode/Low-Voltage Subclock Operation Mode
23.7.1 Setting and operation status
voltage subclock operation mode is set by setting the REGOVL0 register to 02H in the subclock operation mode.
Check whether the clock has been switched by using the PCC.CLS bit.
operates only on the subclock.
mode because the subclock is used as the internal system clock. In addition, power consumption can be further
reduced to the level of the STOP mode by stopping the operation of the main clock oscillator. Power consumption
decreases further in the low-voltage subclock operation mode because the voltage of the regulator is lowered.
on the external clock, also continue operating. In the low-voltage subclock operation mode, however, stop supplying
the external clock input to CSIBn and UARTA0 because these blocks cannot continue operating (n = 0 to 4).
848
The subclock operation mode is set by setting the PCC.CK3 bit to 1 in the normal operation mode. The low-
When the subclock operation mode is set, the internal system clock is changed from the main clock to the subclock.
When the PCC.MCK bit is set to 1, the operation of the main clock oscillator is stopped. As a result, the system
In the subclock operation mode, power consumption can be reduced to a level lower than in the normal operation
When the main clock oscillator is stopped in the subclock operation mode, CSIBn and UARTA0, which can operate
Cautions 1. When manipulating the CK3 bit, do not change the set values of the PCC.CK2 to PCC.CK0 bits
Remark Internal system clock (f
Be sure to set the low-voltage subclock operation mode using the following procedure.
2. If the following conditions are not satisfied, change the CK2 to CK0 bits so that the conditions
(using a bit manipulation instruction to manipulate the bit is recommended). For details of
the PCC register, see 6.3 (1) Processor clock control register (PCC).
are satisfied and set the subclock operation mode.
Internal system clock (f
CLK
): Clock generated from main clock (f
CHAPTER 23 STANDBY FUNCTION
CK2 to CK0 bits
CLK
User’s Manual U18953EJ5V0UD
) > Subclock (f
XT
= 32.768 kHz) × 4
XX
) in accordance with the settings of the
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