HD64F3026X25 Renesas Electronics America, HD64F3026X25 Datasheet - Page 444

• 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
PER flag is set to 1 the RDRF flag will not be set and both transmitting and receiving will be
disabled.
Rev. 2.00 Sep 20, 2005 page 404 of 800
REJ09B0260-0200
No
No
Clear RE bit to 0 in SCR
Read ORER flag in SSR
Read RDRF flag in SSR
Read receive data from
RDR, and clear RDRF
Finished receiving?
flag to 0 in SSR
Start receiving
ORER = 1
RDRF = 1
Initialize
<End>
Figure 12.18 Sample Flowchart for Serial Receiving
No
Yes
Yes
(continued on next page)
Error handling
Yes
(5)
(1)
(2)
(4)
(3)
(1)
(2)(3)
(4)
(5)
SCI initialization: the receive data
input function of the RxD pin is
selected automatically.
Receive error handling: if a receive
error occurs, read the ORER flag in
SSR, then after executing the
necessary error handling, clear the
ORER flag to 0. Neither transmitting
nor receiving can resume while the
ORER flag remains set to 1.
SCI status check and receive data
read: read SSR, check that the RDRF
flag is set to 1, then read receive data
from RDR and clear the RDRF flag to
0. Notification that the RDRF flag
has changed from 0 to 1 can also be
given by the RXI interrupt.
To continue receiving serial data:
check the RDRF flag, read RDR, and
clear the RDRF flag to 0 before the
MSB (bit 7) of the current frame is
received.