R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 70

• 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
10. Protection
Protection function protects important registers from being easily overwritten when a program runs out of
control. Figure 10.1 shows the PRCR Register. The following lists the registers protected by the PRCR
register.
Figure 10.1
Protect Register
• Registers protected by PRC0 bit : CM0, CM1, and OCD, HRA0, HRA1, HRA2 registers
• Registers protected by PRC1 bit : PM0 and PM1 registers
• Registers protected by PRC3 bit : VCA2, VW1C and VW2C registers
b7 b6 b5 b4 b3 b2 b1 b0
0 0
Jan 19, 2006
0
PRCR Register
Bit Symbol
(b5-b4)
(b7-b6)
Symbol
PRCR
PRC0
PRC1
PRC3
(b2)
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—
—
—
Protect Bit 0
Protect Bit 1
Reserved Bit
Protect Bit 3
Reserved Bit
Reserved Bit
Address
Bit Name
000Ah
Writing to the CM0, CM, OCD, HRA0, HRA1and
HRA2 registers is enabled.
0 : Disables w riting
1 : Enables w riting
Writing to the PM0 and PM1 registers is enabled.
0 : Disables w riting
1 : Enables w riting
Set to “0”
Writing to the VCA2, VW1C and VW2C registers is
enabled.
0 : Disables w riting
1 : Enables w riting
Set to “0”
When read, its content is “0”.
After Reset
Function
00h
10. Protection
RW
RW
RW
RW
RW
RW
RO