R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 73
R5F21346CNFP#U0
Manufacturer Part Number
R5F21346CNFP#U0
Description
MCU 1KB FLASH 32K ROM 48-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/34Cr
Datasheet
1.R5F21346CNFPU0.pdf
(759 pages)
Specifications of R5F21346CNFP#U0
Core Processor
R8C
Core Size
16/32-Bit
Speed
20MHz
Connectivity
I²C, LIN, SIO, SSU, UART/USART
Peripherals
POR, PWM, Voltage Detect, WDT
Number Of I /o
43
Program Memory Size
32KB (32K x 8)
Program Memory Type
FLASH
Ram Size
2.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
48-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 40 of 723
Figure 6.2
Figure 6.3
Voltage detection 1 circuit
VCC
VD1S3
to VD1S0
selection
Level
VW1C0 to VW1C3, VW1F0, VW1F1, VW1C7: Bits in VW1C register
VCA26: Bits in VCA2 register
VD1S0 to VD1S3: Bits in VD1LS register
COMPSEL, IRQ1SEL: Bits in CMPA register
VCAC1: Bit in VCAC register
Internal reference voltage
Block Diagram of Voltage Monitor 0 Reset Generation Circuit
Block Diagram of Voltage Monitor 1 Interrupt Generation Circuit
When VCA26 bit is set to 0 (disabled),
voltage detection 1 signal is driven high.
Voltage detection 0 circuit
VCA26
+
VCC
VDSEL1
to VDSEL0
-
VW0C0: Bit in VW0C register
VCA25: Bit in VCA2 register
VDSEL0, VDSEL1: Bits in OFS register
Level selection
Internal reference voltage
fOCO-S
Voltage
detection 1
signal
When VCA25 bit is set to 0 (disabled),
voltage detection 0 signal is driven high.
Voltage monitor 1 interrupt generation circuit
VW1C1 = 0
VW1C1 = 1
VW1C3
1/2
VCA25
+
-
1/2
VW1F1 to VW1F0
1/2
Voltage
detection 0
signal
= 00b
= 01b
= 11b
= 10b
Voltage monitor 0 reset generation circuit
Digital filter
VW1C2 bit is set to 0 (not detected) by writing 0 by a program.
When VCA26 bit is set to 0 (voltage detection 1 circuit disabled),
VW1C2 bit is set to 0.
VCAC1
VW1C7
VW0C0
selection
circuit
Edge
VW1C2
COMPSEL
IRQ1SEL
VW1C0
Voltage monitor 0
reset signal
6. Voltage Detection Circuit
Watchdog timer
interrupt signal
Voltage monitor 1
interrupt signal
Non-maskable
interrupt signal
Maskable
interrupt signal
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