R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 94

• 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 12.2
Watchdog Timer Control Register
Option Function Select Register
b7 b6 b5 b4 b3 b2 b1 b0
NOTES :
b7 b6 b5 b4
1.
2. If the block including the OFS register is erased, “FFh” is set to the OFS register.
0 0
1 1 1
The OFS register is on the flash memory. Write to the OFS register w ith a program.
Jan 19, 2006
b3 b2 b1 b0
OFS and WDC Registers
1
Bit Symbol
Bit Symbol
CSPROINI
ROMCP1
WDTON
ROMCR
(b4-b0)
(b6-b4)
Symbol
Symbol
WDC7
WDC
(b5)
(b6)
OFS
(b1)
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—
—
—
—
—
High-order Bit of Watchdog Timer
Reserved Bit
Reserved Bit
Prescaler Select Bit
Watchdog Timer Start
Select Bit
Reserved Bit
ROM Code Protect
Disabled Bit
ROM Code Protect Bit
Reserved Bit
Count Source Protection
Mode After Reset Select
Bit
(1)
Address
Bit Name
Address
Bit Name
0FFFFh
000Fh
0 : Watchdog timer starts automatically after reset
1 : Watchdog timer is inactive after reset
Set to “1”
0 : ROM code protect disabled
1 : ROMCP1 enabled
0 : ROM code protect enabled
1 : ROM code protect disabled
Set to “1”
0 : Count source protect mode enabled after reset
1 : Count source protect mode disabled after reset
Set to “0”
Set to “0”
0 : Divide-by-16
1 : Divide-by-128
Before Shipment
After Reset
00011111b
Function
Function
FFh
(2)
12. Watchdog Timer
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RW
RO