R5F21324CNSP#U0 Renesas Electronics America, R5F21324CNSP#U0 Datasheet - Page 189

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 160 of 573
14.2.4
14.2.5
Notes:
After Reset
After Reset
After Reset
1. When 0 is written to the CSPROINI bit in the OFS register, the value after reset is 10000000b.
2. To set the CSPRO bit to 1, write 0 and then 1 to it. This bit cannot be set to 0 by a program. Disable interrupts
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Bit
b0
b1
b2
b3
b4
b5
b6
b7
Address 000Fh
Address 001Ch
and DTC activation between writing 0 and writing 1.
Symbol WDTC7
Symbol CSPRO
WDTC7 Prescaler select bit
CSPRO Count source protection mode select bit
Symbol
Symbol
Bit
Bit
Watchdog Timer Control Register (WDTC)
Count Source Protection Mode Register (CSPR)
The above applies when the CSPROINI bit in the OFS register is set to 1.
The above applies when the CSPROINI bit in the OFS register is set to 0.
b7
b7
0
0
1
The following bits of the watchdog timer can be read.
When bits WDTUFS1 to WDTUFS0 in the OFS2 register are
00b (03FFh): b5 to b0
01b (0FFFh): b7 to b2
10b (1FFFh): b8 to b3
11b (3FFFh): b9 to b4
Reserved bit
Reserved bits
b6
b6
0
0
0
Bit Name
Bit Name
b5
b5
1
0
0
b4
b4
1
0
0
When read, the content is 0.
0: Divided-by-16
1: Divided-by-128
(2)
b3
b3
1
0
0
Set to 0.
0: Count source protection mode disabled
1: Count source protection mode enabled
b2
b2
1
0
0
Function
b1
b1
Function
1
0
0
b0
b0
1
0
0
14. Watchdog Timer
R/W
R/W
R/W
R/W
R/W
R
R
R
R
R
R
R

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