R5F21217JFP#U1 Renesas Electronics America, R5F21217JFP#U1 Datasheet - Page 356

• 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 16.44
16.3.5
The state of the SCL and SDA pins are routed through the noise rejection circuit before being latched internally.
Figure 16.44 shows the Block Diagram of Noise Canceller.
The noise rejection circuit consists of two cascaded latch and match detector circuits. When the SCL pin input
signal (or SDA pin input signal) is sampled on f1 and 2 latch outputs match, the level is passed forward to the
next circuit. When they do not match, the former value is retained.
f1 (sampling clock)
Noise Canceller
SCL or SDA
input signal
Block Diagram of Noise Canceller
Page 338 of 458
f1 (sampling clock)
Period of f1
D
Latch
C
Q
D
Latch
C
Q
16. Clock Synchronous Serial Interface
detection
Match
circuit
Internal SCL
or SDA signal