R5F21217JFP#U1 Renesas Electronics America, R5F21217JFP#U1 Datasheet - Page 201

• Manufacturer Part Number: R5F21217JFP#U1
• Description: MCU FLASH 48K 2.5K CMOS 48LQFP
• Manufacturer: Renesas Electronics America
• Series: R8C/2x/21r

Specifications of R5F21217JFP#U1

• Core Processor: R8C
• Core Size: 16/32-Bit
• Speed: 20MHz
• Connectivity: I²C, LIN, SIO, SSU, UART/USART
• Peripherals: POR, Voltage Detect, WDT
• Number Of I /o: 41
• Program Memory Size: 48KB (48K x 8)
• Program Memory Type: FLASH
• Ram Size: 2.5K x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 5.5 V
• Data Converters: A/D 12x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 85°C
• Package / Case: 48-LQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

R8C/20 Group, R8C/21 Group
Rev.2.00 Aug 27, 2008
REJ09B0250-0200
Figure 14.46
TRDIOji input signal
14.3.5.1
TRDIOji input signal
Input signal through
fOCO40M
TRDCLK
Sampling clock
digital filtering
The TRDIOji input is sampled, and when the sampled input level matches 3 times, its level is assumed as a
determination. Select the digital filter function and sampling clock by the TRDDFi register.
f32
f8
f4
f2
f1
Clock period selected by the
i = 0 or 1, j = either A, B, C or D
TCK0 to TCK2: Bits in TRDCRi register
DFCK0 to DFCK1 and DFj: Bits in TRDDF register
IOA0 to IOA2 and IOB0 to IOB2: Bits in TRDIORAi register
IOC0 to IOC3 and IOD0 to IOD3: Bits in TRDIORCi register
or DFCK1 to DFCK0 bits
=011b
Timer RD operation clock
Digital Filter
Block Diagram of Digital Filter
TCK2 to TCK0 bits
=100b
=010b
=001b
D
D
=101b
f1, fOCO40M
=000b
Latch
Latch
TCK2 to TCK0
C
C
Page 183 of 458
Q
Q
=110b
Count source
D
f32
f8
f1
Latch
C
=01b
=10b
DFCK1 to DFCK0
=00b
=11b
Transmission cannot be
performed without 3-times match
because the input signal is
assumed as noise.
Q
D
Latch
C
Sampling clock
Q
D
Latch
C
Q
detection
Match
Signal transmission delayed
circuit
up to 5-sampling clock
Recognition of the
signal change with
3-time match
1
0
DFj
Edge detection
IOA2 to IOA0
IOB2 to IOB0
IOC3 to IOC0
IOD3 to IOD0
circuit
14. Timers