R5F21162SP#U0 Renesas Electronics America, R5F21162SP#U0 Datasheet - Page 69

• 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 9.9
Table 9.6
Oscillation Stop Detection
( (a) or (b) )
Watchdog Timer
Voltage Monitor 2
Generated Interrupt Factor
Jan 19, 2006
Voltage Monitor 2 Interrupts
Procedure of Switching Clock Source From Low-Speed On-Chip Oscillator to Main
Clock
Determine Interrupt Factor of Oscillation Stop Detection, Watchdog Timer and
(oscillation stop detection function
Set OCD1 to OCD0 bits to “00b”
Page 54 of 254
Determine OCD3 Bit
Switch to Main clock
Judge several times
Set OCD2 bit to “0”
(select Main Clock)
(a) OCD3 bit in OCD register = 1
(b) OCD1 to OCD0 bits in OCD register = 11b and the OCD2 bit = 1
VW2C3 bit in VW2C register = 1
VW2C2 bit in VW2C register = 1
disabled)
End
0(Main Clock oscillate)
Determine several times that the main clock is supplied
1(Main Clock Stop)
OCD3 to OCD0 bits: Bits in OCD register
Bit Showing Interrupt Factor
9. Clock Generation Circuit