R5F21356CNFP#U0 Renesas Electronics America, R5F21356CNFP#U0 Datasheet - Page 651

• Manufacturer Part Number: R5F21356CNFP#U0
• Description: MCU 1KB FLASH 32K ROM 52-LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/3x/35Cr

Specifications of R5F21356CNFP#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: 47
• 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: 52-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/35C Group
REJ09B0567-0100 Rev.1.00 Dec. 14, 2009
Page 618 of 725
Figure 30.3
Figure 30.4
30.3.1
INTiCOUT signal
Sampling timing
Port direction register
INTiIC register
Comparator Bi can use the same digital filter as the INTi input. The sampling clock can be selected by bits
INTiF1 and INTiF0 in the INTF register. The INTiCOUT signal output from comparator Bi is sampled every
sampling clock. When the level matches three times, the IR bit in the INTiIC register is set to 1 (interrupt
requested).
Figure 30.3 shows a Configuration of Comparator Bi Digital Filter, and Figure 30.4 shows an Operating
Example of Comparator Bi Digital Filter.
IR bit in
Note:
i =1 or 3
Comparator Bi Digital Filter (i = 1 or 3)
1. The above applies when:
IVCMPi
IVREFi
Bits INTiF1 to INTiF0 in the INTiF register are set to 01b, 10b, or 11b (digital filter used).
Configuration of Comparator Bi Digital Filter
Operating Example of Comparator Bi Digital Filter
INTi
INTiCP0, INTiCOUT: Bits in INTCMP register
INTiF0 to INTiF1: Bits in INTF register
INTiEN, INTiPL: Bits in INTEN register
i = 1 or 3
INTiCOUT
+
-
f32
f1
f8
INTiF1 to INTiF0
= 01b
= 10b
= 11b
INTiCP0 = 0
INTiCP0 = 1
Sampling clock
(match 3 times)
Digital filter
INTiEN
INTiF1 to INTiF0
= other than 00b
= 00b
Set to 0 by a program.
Both edge
detection
circuit
INTiPL = 0
INTiPL = 1
30. Comparator B
To INTi interrupt