R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 175

• Manufacturer Part Number: R5F21346CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 48-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/34Cr

Specifications of R5F21346CNFP#U0

• 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: 43
• Program Memory Size: 32KB (32K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 1.8 V ~ 5.5 V
• Data Converters: A/D 12x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/34C Group
REJ09B0586-0100 Rev.1.00 Jan 13, 2010
Page 142 of 723
9.8
Table 9.6
Oscillation stop detection clock and
frequency bandwidth
Enabled condition for oscillation stop
detection function
Operation at oscillation stop detection
The oscillation stop detection function detects the stop of the XIN clock oscillating circuit.
The oscillation stop detection function can be enabled and disabled by the OCD0 bit in the OCD register.
Table 9.6 lists the Specifications of Oscillation Stop Detection Function.
When the XIN clock is the CPU clock source and bits OCD1 to OCD0 are set to 11b, the MCU is placed in the
following state if the XIN clock stops.
•
•
•
•
OCD2 bit in OCD register = 1 (on-chip oscillator clock selected)
OCD3 bit in OCD register = 1 (XIN clock stops)
CM14 bit in CM1 register = 0 (low-speed on-chip oscillator oscillates)
Oscillation stop detection interrupt request is generated
Oscillation Stop Detection Function
Specifications of Oscillation Stop Detection Function
Item
f(XIN) ≥ 2 MHz
Bits OCD1 to OCD0 set to 11b
Oscillation stop detection interrupt generated
Specification
9. Clock Generation Circuit