R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 66

MCU 1KB FLASH 16K ROM 20-LSSOP

R5F21324CNSP#U0

Manufacturer Part Number
R5F21324CNSP#U0
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Cr
Datasheet

Specifications of R5F21324CNSP#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
15
Program Memory Size
16KB (16K x 8)
Program Memory Type
FLASH
Ram Size
1.5K x 8
Voltage - Supply (vcc/vdd)
1.8 V ~ 5.5 V
Data Converters
A/D 4x10b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
20-LSSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
R8C/32C Group
REJ09B0573-0100 Rev.1.00 Dec. 18, 2009
Page 37 of 573
6.
The voltage detection circuit monitors the voltage input to the VCC pin. This circuit can be used to monitor the VCC
input voltage by a program.
6.1
Table 6.1
VCC
monitor
Process at
voltage
detection
Digital filter
The detection voltage of voltage detection 0 can be selected among four levels using the OFS register.
The detection voltage of voltage detection 1 can be selected among 16 levels using the VD1LS register.
The voltage monitor 0 reset, and voltage monitor 1 interrupt and voltage monitor 2 interrupt can also be used.
Voltage Detection Circuit
Overview
Item
Voltage to
monitor
Detection
target
Detection
voltage
Monitor
Reset
Interrupts
Switching
enable/disable
Sampling
time
Voltage Detection Circuit Specifications
Vdet0
Whether passing through
Vdet0 by falling
Selectable among
4 levels using the OFS
register.
None
Voltage monitor 0 reset
Reset at Vdet0 > VCC;
CPU operation restarts
at VCC > Vdet0
None
No digital filter function
Voltage Monitor 0
Vdet1
Whether passing through
Vdet1 by rising or falling
Selectable among
16 levels using the VD1LS
register.
The VW1C3 bit in
the VW1C register
Whether VCC is higher or
lower than Vdet1
None
Voltage monitor 1 interrupt
Non-maskable or maskable
selectable
Interrupt request at:
Vdet1 > VCC
and/or
VCC > Vdet1
Supported
(fOCO-S divided by n) × 2
n: 1, 2, 4, and 8
Voltage Monitor 1
Vdet2
Whether passing through
Vdet2 by rising or falling
The fixed level
The VCA13 bit in
the VCA1 register
Whether VCC or LVCMP2
input voltage is higher or
lower than Vdet2
None
Voltage monitor 2 interrupt
Non-maskable or maskable
selectable
Interrupt request at:
Vdet2 > VCC
and/or
VCC > Vdet2
Supported
(fOCO-S divided by n) × 2
n: 1, 2, 4, and 8
6. Voltage Detection Circuit
Voltage Monitor 2

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