HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 442

• Manufacturer Part Number: HD64F3026X25
• Description: MCU 3V 256K 100-TQFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8/300Hr

Specifications of HD64F3026X25

• Core Processor: H8/300H
• Core Size: 16-Bit
• Speed: 25MHz
• Connectivity: SCI, SmartCard
• Peripherals: PWM, WDT
• Number Of I /o: 70
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 8K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Data Converters: A/D 8x10b; D/A 2x8b
• Oscillator Type: Internal
• Operating Temperature: -20°C ~ 75°C
• Package / Case: 100-TQFP, 100-VQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -

Section 12 Serial Communication Interface
Transmitting Serial Data (Synchronous Mode): Figure 12.16 shows a sample flowchart for
transmitting serial data and indicates the procedure to follow.
Rev. 2.00 Sep 20, 2005 page 402 of 800
REJ09B0260-0200
and clear TDRE flag to 0 in SSR
Write transmit data in TDR
Clear TE bit to 0 in SCR
Read TDRE flag in SSR
Read TEND flag in SSR
All data transmitted?
Start transmitting
TDRE = 1
TEND = 1
Initialize
<End>
Figure 12.16 Sample Flowchart for Serial Transmitting
Yes
Yes
Yes
No
No
No
(1)
(2)
(3)
(1)
(2)
(3)
SCI initialization: the transmit data
output function of the TxD pin is
selected automatically.
SCI status check and transmit data
write: read SSR, check that the TDRE
flag is 1, then write transmit data in
TDR and clear the TDRE flag to 0.
To continue transmitting serial data:
after checking that the TDRE flag is 1,
indicating that data can be written,
write data in TDR, then clear the TDRE
flag to 0.