R5F21274JFP#U0 Renesas Electronics America, R5F21274JFP#U0 Datasheet - Page 125

• Manufacturer Part Number: R5F21274JFP#U0
• Description: MCU FLASH 2K FLASH 16K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/27r

Specifications of R5F21274JFP#U0

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 25
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 32-LQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

R8C/26 Group, R8C/27 Group
Rev.2.10
REJ09B0278-0210
Figure 10.19
Set OCD1 bit to 0 (oscillation stop
Interrupt sources judgement
To oscillation stop detection
detection interrupt disabled).
NOTE:
(XIN clock stopped)
OCD1 to OCD3: Bits in OCD register
VW2C2, VW2C3: Bits in VW2C register
interrupt routine
1. This disables multiple oscillation stop detection interrupts.
OCD3 = 1 ?
Sep 26, 2008
YES
Timer, Voltage Monitor 1, or Voltage Monitor 2 Interrupt (N, D Version)
Example of Determining Interrupt Source for Oscillation Stop Detection, Watchdog
(1)
NO
interrupt enabled) and OCD2 = 1
(on-chip oscillator clock selected
Page 106 of 453
(oscillation stop detection
as system clock) ?
OCD1 = 1
YES
NO
To watchdog timer
(Watchdog timer
interrupt routine
VW2C3 = 1 ?
underflow)
YES
NO
To voltage monitor 2
(passing Vdet2)
interrupt routine
VW2C2 = 1 ?
YES
10. Clock Generation Circuit
NO
To voltage monitor 1
interrupt routine