R5F21346CNFP#U0 Renesas Electronics America, R5F21346CNFP#U0 Datasheet - Page 200

• 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 167 of 723
Figure 11.9
Figure 11.10
11.4.7
INTi input
Sampling
timing
IR bit in
INTiIC register
The INTi input contains a digital filter. The sampling clock is selected using bits INTiF1 and INTiF0 in
registers INTF and INTF1. The INTi level is sampled every sampling clock cycle and if the sampled input level
matches three times, the IR bit in the INTiIC register is set to 1 (interrupt requested).
Figure 11.9 shows the INTi Input Filter Configuration. Figure 11.10 shows an Operating Example of INTi Input
Filter.
Note:
INTi Input Filter (i = 0 to 4)
Port direction
1. This is an operating example when bits INTiF1 to INTiF0 in registers INTF and INTF1 are set to 01b, 10b, or 11b
Note:
register
(digital filter enabled).
i = 0 to 4
INTi Input Filter Configuration
Operating Example of INTi Input Filter
1. INT0: Port P4_5 direction register
INTi
INT1: Port P1_5 direction register when P1_5 pin used
INT3: Port P3_3 direction register when P3_3 pin used
INT4: Port P6_5 direction register
(1)
INTiF0, INTiF1: Bits in registers INTF, INTF1
INTiEN, INTiPL: Bits in registers INTEN, INTEN1
i = 0 to 4
f32
Port P1_7 direction register when P1_7 pin used
Port P2_0 direction register when P2_0 pin used
Port P6_7 direction register when P6_7 pin used
f1
f8
INTiF1 to INTiF0
= 01b
= 10b
= 11b
Sampling clock
when P6_6 pin used
Digital filter
(input level
matches
3 times)
Other than
INTiF1 to INTiF0
= 00b
INTiEN
= 00b
Both edges
detection
circuit
Set to 0 by a program.
INTiPL = 0
INTiPL = 1
INTi interrupt
11. Interrupts