DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 505

• Manufacturer Part Number: DF2148BTE20
• Description: IC H8S MCU FLASH 128K 100-QFP
• Manufacturer: Renesas Electronics America
• Series: H8® H8S/2100r

Specifications of DF2148BTE20

• Core Processor: H8S/2000
• Core Size: 16-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SCI, X-Bus
• Peripherals: 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): 4.5 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: HD64F2148BTE20; HD64F2148BTE20

Receive Operation Using the HNDS Function (HNDS = 1):
Figure 16.11 shows the sample flowchart for the operations in master receive mode (HNDS = 1).
Figure 16.11 Sample Flowchart for Operations in Master Receive Mode
No
No
Read IRIC flag in ICCR
Set ACKB = 0 in ICSR
Set HNDS = 1 in ICXR
Set ACKB = 1 in ICSR
Clear IRIC flag in ICCR
Read IRIC flag in ICCR
Clear IRIC flag in ICCR
Clear IRIC flag in ICCR
Set TRS = 0 in ICCR
Master receive mode
Set TRS = 1 in ICCR
Set BBSY = 0 and
SCP = 0 in ICCR
Last receive?
Read ICDR
Read ICDR
Read ICDR
IRIC = 1?
IRIC = 1?
End
Yes
Yes
No
Yes
[1] Select receive mode.
[2] Start receiving. The first read is a dummy read.
[5] Read the receive data (for the second and subsequent read)
[3] Wait for 1 byte to be received.
[4] Clear IRIC flag.
[6] Set acknowledge data for the last reception.
[7] Read the receive data.
[8] Wait for 1 byte to be received.
[9] Clear IRIC flag.
[10] Read the receive data.
[11] Set stop condition issuance.
(HNDS = 1)
(Set IRIC at the rise of the 9th clock for the receive frame)
Dummy read to start receiving if the first frame is
the last receive data.
Generate stop condition.
Section 16 I
Rev. 3.00 Mar 21, 2006 page 449 of 788
2
C Bus Interface (IIC) (Optional)
REJ09B0300-0300