DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 557

• Manufacturer Part Number: DF2117VT20V
• Description: MCU 16BIT FLASH 3V 160K 144-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2117VT20V

• Core Processor: H8S/2600
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: FIFO, I²C, LPC, SCI, SmartCard
• Peripherals: POR, PWM, WDT
• Number Of I /o: 112
• Program Memory Size: 160KB (160K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 16x10b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 144-TQFP, 144-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -

Section 17 Serial Communication Interface with FIFO (SCIF)
17.4.2
Operation in Asynchronous Communication
Figure 17.2 illustrates the typical format for asynchronous serial communication. One frame
consists of a start bit (low level), followed by transmit/receive data (LSB-first: from the least
significant bit), a parity bit, and a stop bit (high level). In asynchronous serial communication, the
transmission line is usually held high in the mark state (high level). The SCIF monitors the
transmission line, and when it detects the space state (low level), recognizes a start bit and starts
serial communication. Inside the SCIF, the transmitter and receiver are independent units,
enabling full-duplex communication. Both of the transmitter and receiver also have a 16-stage
FIFO buffered structure so that data can be read or written during transmission or reception,
enabling continuous data transmission and reception.
Idle state (mark state)
1
1
Serial data
D0
D1
D2
D3
D4
D5
D6
D7
0/1
0
1
1
Start
Parity
Stop bit
bit
bit
Transmit/receive data
1 bit
1, 1.5,
5, 6, 7, or 8 bits
1 bit
or
or
none
2 bits
One unit of transfer data (character or frame)
Figure 17.2 Data Format in Serial Transmission/Reception
(Example with 8-Bit Data, Parity and 2 Stop Bits)
Rev. 2.00 Sep. 28, 2009 Page 515 of 994
REJ09B0452-0200