R5F21132FP#U0 Renesas Electronics America, R5F21132FP#U0 Datasheet - Page 74

• Manufacturer Part Number: R5F21132FP#U0
• Description: IC R8C MCU FLASH 8K 32LQFP
• Manufacturer: Renesas Electronics America
• Series: M16C™ M16C/R8C/Tiny/13r

Specifications of R5F21132FP#U0

• Core Processor: R8C
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: SIO, UART/USART
• Peripherals: LED, POR, Voltage Detect, WDT
• Number Of I /o: 22
• Program Memory Size: 8KB (8K x 8)
• Program Memory Type: FLASH
• Ram Size: 512 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 85°C
• Package / Case: 32-LQFP
• For Use With: R0K521134S000BE - KIT EVAL STARTER FOR R8C/13R0E521134EPB00 - KIT EMULATOR PROBE FOR PC7501R0E521134CPE00 - EMULATOR COMPACT R8C/13
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/13 Group
Rev.1.20
REJ09B0111-0120
Figure 10.12 Operation Example of INT0 Input Filter
Figure 10.11 INT0 Input Filter
Sampling
timing
P45 input
P4_5 in
P4 register
IR bit in
INT0IC register
10.2.2 INT0 Input Filter
This is an operation example when the INT0F1 to INT0F0 bits in the
INT0F register is set to “01
The INT0 input has a digital filter which can be sampled by one of three sampling clocks. The sampling
clock is selected using the INT0F1 to INT0F0 bits in the INT0F register. The IR bit in the INT0IC
register is set to “1” (interrupt requested) when the sampled input level matches three times. When the
INT0F1 to INT0F0 bits are set to “01
filtered value.
Figure 10.11 shows the INT0 input filter configuration. Figure 10.12 shows an operation example of
INT0 input filter.
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Jan 27, 2006
Port P45
direction
INT0F0, INT0F1: Bits in INT0F register
INT0EN: Bit in INTEN register
register
_______
_______
INT0
______
f
f
f
1
8
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INT0F1 to INT0F0
2
”, “10
=11
=01
=10
2
2
2
”, or “11
2
_____
2
” (passing digital filter).
______
Sampling clock
matches 3x)
Digital filter
(input level
2
”, “10
2
”, or “11
Other than
INT0F1 to INT0F0
INT0EN
=00
=00
2
2
”, the P4_5 bit in the P4 register indicates the
2
Set to “0” in program
INT0 interrupt
P4_5 bit
10.2 INT Interrupt
______