R5F21324ANSP#U1 Renesas Electronics America, R5F21324ANSP#U1 Datasheet - Page 147

• Manufacturer Part Number: R5F21324ANSP#U1
• Description: MCU 1KB FLASH 16K ROM 20-LSSOP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/32Ar

Specifications of R5F21324ANSP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, PWM, Voltage Detect, WDT
• Number Of I /o: 15
• Program Memory Size: 16KB (16K x 8)
• Program Memory Type: FLASH
• Ram Size: 1.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 20-LSSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Under development
R8C/32A Group
REJ09B0458-0020 Rev.0.20
Page 117 of 583
Figure 9.10
Table 9.6
Oscillation stop detection
((a) or (b))
Watchdog timer
Voltage monitor 1
Voltage monitor 2
Generated Interrupt Source
Voltage Monitor 1, or Voltage Monitor 2 Interrupt
Clock
Preliminary specification
Specifications in this manual are tentative and subject to change.
Determination of Interrupt Sources for Oscillation Stop Detection, Watchdog Timer,
Procedure for Switching Clock Source from Low-Speed On-Chip Oscillator to XIN
NO
Nov 05, 2008
(a) OCD3 bit in OCD register = 1
(b) OCD1 to OCD0 bits in OCD register = 11b and OCD2 bit = 1
VW2C3 bit in VW2C register = 1
VW1C2 bit in VW1C register = 1
VW2C2 bit in VW2C register = 1
Set bits OCD1 to OCD0 to 00b
whether OCD3 bit is set to 0
(XIN clock oscillates)
Check several times
(XIN clock selected)
Switch to XIN clock
Set OCD2 bit to 0
End
YES
Bit Indicating Interrupt Source
OCD3 to OCD0: Bits in OCD register
9. Clock Generation Circuit