R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 59

• 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 9.6
High-speed On-Chip Oscillator Control Register 1
High-Speed On-Chip Oscillator Control Register 2
b7 b6 b5 b4 b3 b2 b1 b0
NOTES :
b7 b6 b5 b4
NOTES :
1. Set the PRC0 bit in the PRCR register to “1” (w rite enable) before rew riting to this register.
1. Set the PRC0 bit in the PRCR register to “1” (w rite enable) before rew riting to this register.
2.
3.
4.
High-speed on-chip oscillator frequency = 8MHz (HRA1 register = value w hen shipping)
If fRING-fast mode 0 is sw itched to fRING-fast mode 1, frequency w ill increase 1.5 times.
If fRING-fast mode 0 is sw itched to fRING-fast mode 2, frequency w ill increase 0.5 times.
Jan 19, 2006
0 0 0
b3 b2 b1 b0
HRA1 and HRA2 Registers
The frequency of high-speed on-chip oscillator is adjusted w ith bits 0 to 7.
High-speed on-chip oscillator frequency = 8MHz
(HRA1 register = value w hen shipping ; fRING-fast mode 0)
Set the value of the HRA1 register to smaller (minimum value : 00h), the frequency w ill be
higher
Set the value of the HRA1 register to larger (maximum value : FFh), the frequecny w ill be
low er
Bit Symbol
(b4-b2)
(b7-b5)
Symbol
HRA20
HRA21
Symbol
HRA2
HRA1
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High-Speed On-Chip Oscillator Mode
Select Bit
Reserved Bit
Nothing is assigned. When w rite, set to “0”.
When read, its content is “0”.
Address
Address
Bit Name
0021h
0022h
(1)
(1)
Function
b1 b0
0 0 : fRING-fast mode 0
0 1 : fRING-fast mode 1
1 0 : fRING-fast mode 2
1 1 : Do not set
Set to “0”
When Shipping
After Reset
After Reset
Function
00h
9. Clock Generation Circuit
(2)
(3)
(4)
RW
RW
RW
RW
RW
RW
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