R5F21102DFP#U0 Renesas Electronics America, R5F21102DFP#U0 Datasheet - Page 66

• Manufacturer Part Number: R5F21102DFP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/10r

Specifications of R5F21102DFP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 16MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, WDT
• Number Of I /o: 22
• 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 8x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/10 Group
Rev.1.20 Jan 27, 2006
REJ09B0019-0120
Figure 11.2 WDC Register, WDTR Register, and WDTS Register
Watchdog timer reset register
W a t c h d o g t i m e r c o n t r o l r e g i s t e r
b7
Watchdog timer start register
b 7
b7
b 6
0
b 5
0
b 4
b 3
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b 2
b 1
b0
b0
b0
The watchdog is initialized after a write instruction to this register.
The watchdog timer value is always initialized to “7FFF
whatever value is written.
B i t s y m b o l
The watchdog timer starts counting after a write instruction to this register.
( b 4 - b 0 )
W D C 7
( b 5 )
( b 6 )
Symbol
WDC
Symbol
Symbol
WDTR
WDTS
R e s e r v e d b i t
R e s e r v e d b i t
P r e s c a l e r s e l e c t b i t
H i g h - o r d e r b i t o f w a t c h d o g t i m e r
B i t n a m e
Address
Address
000F
Address
000D
000E
16
16
Function
16
Function
Indeterminate
Indeterminate
00011111
M u s t s e t t o “ 0 ”
0 : D i v i d e d b y 1 6
1 : D i v i d e d b y 1 2 8
M u s t s e t t o “ 0 ”
After reset
After reset
After reset
2
16
F u n c t i o n
” regardless of
11. Watchdog Timer
RW
RW
RW
RW
RW
WO
RO
RW
WO