HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 434

• 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
Rev. 2.00 Sep 20, 2005 page 394 of 800
REJ09B0260-0200
Clear DR bit to 0 and set DDR to 1
Figure 12.10 Sample Flowchart for Transmitting Multiprocessor Serial Data
Write transmit data in TDR
and set MPBT bit in SSR
Clear TE bit to 0 in SCR
Read TDRE flag in SSR
Read TEND flag in SSR
Output break signal?
All data transmitted?
Clear TDRE flag to 0
Start transmitting
TDRE = 1
TEND = 1
Initialize
<End>
Yes
Yes
Yes
Yes
No
No
No
No
(4)
(1)
(2)
(3)
(1)
(2)
(3)
(4)
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.
Also set the MPBT flag to 0 or 1 in
SSR. Finally, 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.
To output a break signal at the end of
serial transmission:
set the DDR bit to 1 and clear the DR
bit to 0, then clear the TE bit to 0 in
SCR.