R5F213J6CNNP#U0 Renesas Electronics America, R5F213J6CNNP#U0 Datasheet - Page 213
R5F213J6CNNP#U0
Manufacturer Part Number
R5F213J6CNNP#U0
Description
MCU 1KB FLASH 32K ROM 36-QFN
Manufacturer
Renesas Electronics America
Series
R8C/3x/3JCr
Datasheet
1.R5F213J6CNNPU0.pdf
(750 pages)
Specifications of R5F213J6CNNP#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
31
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 10x10b, D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
36-WQFN Exposed Pad, 36-HWQFN
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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R8C/3JC Group
REJ09B0602-0100 Rev.1.00
May 12, 2010
14.3
Figure 14.2
14.3.1
Count starts
14.3.1.1
0%
Note:
1. A watchdog timer interrupt or watchdog timer reset is generated.
The period for acknowledging refreshment operation to the watchdog timer (write to the WDTR register) can
be selected by bits WDTRCS0 and WDTRCS1 in the OFS2 register. Figure 14.2 shows the Refresh
Acknowledgement Period for Watchdog Timer.
Assuming that the period from when the watchdog timer starts counting until it underflows is 100%, a refresh
operation executed during the refresh acknowledgement period is acknowledged. Any refresh operation
executed during the period other than the above is processed as an incorrect write, and a watchdog timer
interrupt or watchdog timer reset (selectable by the PM12 bit in the PM1 register) is generated.
Do not execute any refresh operation while the count operation of the watchdog timer is stopped.
Processed as
incorrect write
Processed as incorrect write
Functional Description
Common Items for Multiple Modes
Processed as incorrect write
Refresh Acknowledgement Period
Refresh Acknowledgement Period for Watchdog Timer
25%
(1)
Refresh can be acknowledged
Watchdog timer period
Refresh can be acknowledged
(1)
50%
Refresh can be acknowledged
(1)
75%
Refresh can be
acknowledged
Underflow
100%
Refresh acknowledge period
100% (WDTRCS1 to WDTRCS0 = 11b)
75% (WDTRCS1 to WDTRCS0 = 10b)
50% (WDTRCS1 to WDTRCS0 = 01b)
25% (WDTRCS1 to WDTRCS0 = 00b)
WDTRCS0, WDTRCS1: Bits in OFS2 register
14. Watchdog Timer
Page 182 of 715
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