R5F21134DFP#U0 Renesas Electronics America, R5F21134DFP#U0 Datasheet - Page 56

• Manufacturer Part Number: R5F21134DFP#U0
• Description: IC R8C MCU FLASH 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/13r

Specifications of R5F21134DFP#U0

• Core Size: 16-Bit
• Program Memory Size: 16KB (16K x 8)
• Oscillator Type: Internal
• Core Processor: R8C
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 22
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• No. Of I/o's: 22
• Eeprom Memory Size: 4KB
• Ram Memory Size: 1024Byte
• Cpu Speed: 20MHz
• No. Of Timers: 16
• Digital Ic Case: RoHS Compliant
• Controller Family/series: R8C/13
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Eeprom Size: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Table 6.5 Interrupt Factor Determination of Oscillation Stop Detection, Watchdog Timer Interrupt or
Figure 6.7 Switching Clock Source From Low-speed On-Chip Oscillator to Main Clock
Oscillation stop detection
( (a) or (b) )
Watchdog timer
Voltage detection
Generated Interrupt Factor
Jan 27, 2006
Voltage Detection Interrupt
page 43 of 205
(oscillation stop detection function disabled)
Set OCD1 to OCD0 bits to 00
Determine several times
(selecting main clock)
Switch to Main clock
Set OCD2 bit to 0
Verify OCD3 bit
(a) The OCD3 bit in the OCD register = 1
(b) The OCD1 to OCD0 bits in the OCD register = 11
The D43 bit in the D4INT register = 1
The D42 bit in the D4INT register = 1
OCD2 bit = 1
End
0(main clock oscillating)
Determine several times that the main clock is supplied
Bit showing interrupt source
2
1(main clock stop)
OCD3 to OCD0 bits: Bits in OCD register
6.5 Oscillation Stop Detection Function
2
and the