R5F21334CNFP#U0 Renesas Electronics America, R5F21334CNFP#U0 Datasheet - Page 179

MCU 1KB FLASH 16K ROM 32-LQFP

R5F21334CNFP#U0

Manufacturer Part Number
R5F21334CNFP#U0
Description
MCU 1KB FLASH 16K ROM 32-LQFP
Manufacturer
Renesas Electronics America
Series
R8C/3x/33Cr
Datasheet

Specifications of R5F21334CNFP#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
27
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 12x10b; D/A 2x8b
Oscillator Type
Internal
Operating Temperature
-20°C ~ 85°C
Package / Case
32-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-

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R8C/33C Group
REJ09B0570-0100 Rev.1.00 Dec. 14, 2009
Page 149 of 589
Figure 11.9
Figure 11.10
11.4.5
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 the
INTF register. 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, 1, 3)
Port direction
1. This is an operating example when bits INTiF1 to INTiF0 in the INTF register are set to 01b, 10b, or 11b
Note:
1. INT0: Port P4_5 direction register
register
(digital filter enabled).
i = 0, 1, 3
INTi Input Filter Configuration
Operating Example of INTi Input Filter
INT1: Port P1_5 direction register when P1_5 pin used
INT3: Port P3_3 direction register when P3_3 pin used
INTi
(1)
Port P1_7 direction register when P1_7 pin used
Port P2_0 direction register when P2_0 pin used
INTiF0, INTiF1: Bits in INTF register
INTiEN, INTiPL: Bits in INTEN register
i = 0, 1, 3
f32
f1
f8
INTiF1 to INTiF0
= 01b
= 10b
= 11b
Sampling clock
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

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