DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 594

• Manufacturer Part Number: DF2148ATE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148ATE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: Host Interface, I²C, IrDA, SCI
• Peripherals: POR, PWM, WDT
• Number Of I /o: 74
• Program Memory Size: 128KB (128K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 4 V ~ 5.5 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: -
• Other names: HD64F2148ATE20; HD64F2148ATE20

Section 16 I
Rev. 4.00 Sep 27, 2006 page 548 of 1130
REJ09B0327-0400
Write transmit data to ICDR
Figure 16.19 Flowchart and Timing of Start Condition Instruction Issuance for
SDA
IRIC
SCL
Clear IRIC in ICSR
[1] IRIC determination
Start condition
Write BBSY = 1,
Read SCL pin
SCP = 0 (ICSR)
SCL = Low ?
IRIC = 1 ?
issuance?
IRIC = 1 ?
Yes
Yes
Yes
2
C Bus Interface [Option]
Yes
ACK
No
No
No
No
9
[2]
Other processing
Determination
of SCL = low
[1]
[2]
[3]
[4]
[5]
[3] Start condition
instruction issuance [4] IRIC
Retransmission
Note: Program so that processing from [3] to [5] is
[1] Wait for end of 1-byte transfer
[2] Determine whether SCL is low
[3] Issue restart condition instruction for retransmission
[4] Determine whether start condition is generated or not
[5] Set transmit data (slave address + R/W)
(retransmission)
Start condition
executed continuously.
determination
[5]
ICDR write
(next transmit data)
bit 7