DF2117VT20V Renesas Electronics America, DF2117VT20V Datasheet - Page 472

• 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: -

Rev. 2.00 Sep. 28, 2009 Page 430 of 994
REJ09B0452-0200
and clear TDRE flag in SSR to 0
Write transmit data to TDR
Read TDRE flag in SSR
Read TEND flag in SSR
Clear TE bit in SCR to 0
All data transmitted?
Clear DR to 0 and
Start transmission
Figure 15.7 Sample Serial Transmission Flowchart
End transmission
Break output?
set DDR to 1
Initialization
TDRE = 1
TEND = 1
Yes
Yes
Yes
Yes
No
No
No
No
[1]
[2]
[3]
[4]
[5]
[1] SCI initialization:
[2] SCI status check and transmit
[3] Serial transmission continuation
[4] Break output at the end of serial
Note:
The TxD pin is automatically
designated as the transmit data
output pin.
After the TE bit is set to 1, a frame
of 1s is output, and transmission is
enabled.
data write:
Read SSR and check that the
TDRE flag is set to 1, then write
transmit data to TDR and clear the
TDRE flag to 0.
procedure:
To continue serial transmission,
read 1 from the TDRE flag to
confirm that writing is possible,
then write data to TDR, and clear
the TDRE flag to 0.
transmission:
To output a break in serial
transmission, set DDR for the port
corresponding to the TxD pin to 1,
clear DR to 0, then clear the TE bit
in SCR to 0.
Do not write to SMR, SCR,
BRR, and SDCR from the
start to the end of
transmission except the
process of [5].