R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 95

• Manufacturer Part Number: R5F21162SP#U0
• Description: IC R8C MCU FLASH 8K 20SSOP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/16r

Specifications of R5F21162SP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 13
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-SSOP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/16 Group, R8C/17 Group
Rev.2.10
REJ09B0169-0210
Figure 12.3
Watchdog Timer Reset Register
Watchdog Timer Start Register
Count Source Protection Mode Register
b7
NOTES :
b7
b7 b6 b5 b4 b3 b2 b1 b0
NOTES :
1.
2.
1.
2.
0 0 0 0
Do not generate an interrupt betw een “00h” and the “FFh” w ritings.
When the CSPRO bit in the CSPR register is set to “1” (count source protection mode enabled),
“0FFFh” is set to the w atchdog timer.
When w riting “0” to the CSPROINI bit in the OFS register, the value after reset is set to “10000000b”.
Write “0” before w riting “1” to set the CSPRO bit to “1”.
“0” cannot be set by a program
Jan 19, 2006
0
WDTR, WDTS and CSPR Registers
0
b0
b0
0
When w riting “00h” before w riting “FFh”, the w atchdog timer is reset.
The default value of the w atchdog timer is set to “7FFFh” w hen count source protection
mode is disabled and “0FFFh” w hen count source protection mode is enabled.
The w atchdog timer starts counting after a w rite instruction to this register.
Bit Symbol
(b6-b0)
CSPRO
Symbol
Symbol
Symbol
WDTR
WDTS
CSPR
Page 80 of 254
—
Reserved Bit
Count Source Protection Mode
Select Bit
Address
Address
000Dh
000Eh
(2)
Address
Bit Name
001Ch
Function
Function
Set to “0”
0 : Count source protection mode disabled
1 : Count source protection mode enabled
Indeterminate
Indeterminate
After Reset
After Reset
After Reset
Function
00h
(1)
(1)
(2)
12. Watchdog Timer
WO
WO
RW
RW
RW
RW
RW