R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 499
R5F21324ANSP#U1
Manufacturer Part Number
R5F21324ANSP#U1
Description
MCU 1KB FLASH 16K ROM 20-LSSOP
Manufacturer
Renesas Electronics America
Series
R8C/3x/32Ar
Datasheet
1.R5F21322ANSPU1.pdf
(629 pages)
Specifications of R5F21324ANSP#U1
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
-
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Under development
R8C/32A Group
REJ09B0458-0020 Rev.0.20
Page 469 of 583
28.2.4
Notes:
After Reset The LVDAS bit in the OFS register is set to 1.
After Reset The LVDAS bit in the OFS register is set to 0.
1. Use the VCA20 bit only when the MCU enters wait mode. To set the VCA20 bit, follow the procedure shown in
2. When the VCA20 bit is set to 1 (low consumption enabled), do not set the CM10 bit in the CM1 register to 1 (stop
3. When writing to the VCA25 bit, set a value after reset.
4. To use the voltage detection 1/comparator A1 interrupt or the VW1C3 bit in the VW1C register, set the VCA26 bit
5. To use the voltage detection 2/comparator A2 interrupt or the VCAC13 bit in the VCA1 register, set the VCA27
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 0034h
Symbol
Figure 9.3 Procedure for Reducing Internal Power Consumption Using VCA20 bit .
mode).
to 1.
After the VCA26 bit is set to 1 from 0, allow td(E-A) to elapse before the voltage detection 1/comparator A1 circuit
starts operation.
bit to 1.
After the VCA27 bit is set to 1 from 0, allow td(E-A) to elapse before the voltage detection 2/comparator A2 circuit
starts operation.
Set the PRC3 bit in the PRCR register to 1 (write enabled) before rewriting the VCA2 register.
Bit
Symbol
VCA20 Internal power low consumption
VCA21 Comparator A1 reference voltage
VCA22 LVCMP1 comparison voltage
VCA23 Comparator A2 reference voltage
VCA24 LVCMP2 comparison voltage
VCA25 Voltage detection 0 enable bit
VCA26 Voltage detection 1/comparator A1
VCA27 Voltage detection 2/comparator A2
Voltage Detect Register 2 (VCA2)
VCA27
Preliminary specification
Specifications in this manual are tentative and subject to change.
b7
0
0
enable bit
input select bit
external input select bit
input select bit
external input select bit
enable bit
enable bit
VCA26
b6
0
0
(1)
(3)
(5)
Nov 05, 2008
Bit Name
VCA25
b5
0
1
VCA24
b4
0
0
(3)
0: Low consumption disabled
1: Low consumption enabled
0: Internal reference voltage
1: LVREF pin input voltage
0: Supply voltage (VCC)
1: LVCMP1 pin input voltage
0: Internal reference voltage
1: LVREF pin input voltage
0: Supply voltage (VCC)
1: LVCMP2 pin input voltage (Vdet2_EXT)
0: Voltage detection 0 circuit disabled
1: Voltage detection 0 circuit enabled
0: Voltage detection 1/comparator A1 circuit disabled
1: Voltage detection 1/comparator A1 circuit enabled
0: Voltage detection 2/comparator A2 circuit disabled
1: Voltage detection 2/comparator A2 circuit enabled
VCA23
b3
0
0
VCA22
b2
0
0
VCA21
Function
b1
0
0
(2)
(Vdet2_0)
VCA20
b0
0
0
28. Comparator A
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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