UPD70F3786GJ-GAE-AX Renesas Electronics America, UPD70F3786GJ-GAE-AX Datasheet - Page 1646
UPD70F3786GJ-GAE-AX
Manufacturer Part Number
UPD70F3786GJ-GAE-AX
Description
MCU 32BIT V850ES/JX3-E 144-LQFP
Manufacturer
Renesas Electronics America
Series
V850ES/Jx3-Er
Datasheet
1.UPD70F3778GF-GAT-AX.pdf
(1817 pages)
Specifications of UPD70F3786GJ-GAE-AX
Core Processor
RISC
Core Size
32-Bit
Speed
50MHz
Connectivity
CAN, CSI, EBI/EMI, Ethernet, I²C, UART/USART, USB
Peripherals
DMA, LVD, PWM, WDT
Number Of I /o
100
Program Memory Size
512KB (512K x 8)
Program Memory Type
FLASH
Ram Size
124K x 8
Voltage - Supply (vcc/vdd)
2.85 V ~ 3.6 V
Data Converters
A/D 12x10b
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:
UPD70F3786GJ-GAE-AX
Manufacturer:
Renesas Electronics America
Quantity:
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Part Number:
UPD70F3786GJ-GAE-AX
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30.3 Registers
1644
The low-voltage detector is controlled by the following registers.
• Low-voltage detection register (LVIM)
• Internal RAM data status register (RAMS)
(1) Low-voltage detection register (LVIM)
The LVIM register is a special register. This can be written only in the special combination of the sequences
(see 3.4.8 Special registers).
The LVIM register is used to enable or disable low-voltage detection, and to set the operation mode of the low-
voltage detector.
This register can be read or written in 8-bit or 1-bit units. However, the LVIF bit is read-only.
After reset: 00H
LVIM
Notes 1. Reset by low-voltage detection: 82H
Cautions 1. When the LVION and LVIMD bits to 1, the low-voltage detector cannot be stopped
2. After the LVI operation has started (LVION bit = 1) or when INTLVI has occurred, confirm
LVIF
LVION
LVIMD
LVION
<7>
2. When the LVION bit is set to 1, the comparator in the LVI circuit starts operating.
3. Be sure to set bits 6 to 2 to “0”.
Reset due to other source: 00H
the supply voltage state using the LVIF bit.
0
1
0
1
0
1
Note 1
Note 2
until the reset request due to other than the low-voltage detection is generated.
Wait 0.2 ms or longer by software before checking the voltage at the LVIF bit after
the LVION bit is set.
Disable operation.
Enable operation.
Generates interrupt signal INTLVI when the supply voltage drops or rises across
the detection voltage value.
Generates internal reset signal LVIRES when the supply voltage drops across the
detected voltage value.
When supply voltage > detected voltage, or when operation is disabled
Supply voltage of connected power supply < detected voltage
CHAPTER 30 LOW-VOLTAGE DETECTOR (LVI)
R/W
6
0
Address: FFFFF890H
User’s Manual U19601EJ2V0UD
Selection of operation mode of low-voltage detection
Low-voltage detection operation enable or disable
5
0
Low-voltage detection flag
4
0
3
0
2
0
LVIMD
<1>
LVIF
<0>
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