DF2148ATE20 Renesas Electronics America, DF2148ATE20 Datasheet - Page 569

• 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

Table 16.4 I
16.3.2
In I
data, and the slave device returns an acknowledge signal.
The transmission procedure and operations by which data is sequentially transmitted in
synchronization with ICDR write operations, are described below.
(1) Set the ICE bit in ICCR to l. Set bits MLS, WAIT, and CKS2 to CKS0 in ICMR, and bit IICX
(2) Read the BBSY flag to confirm that the bus is free.
(3) Set the MST and TRS bits to 1 in ICCR to select master transmit mode.
(4) Write 1 to BBSY and 0 to SCP. This switches SDA from high to low when SCL is high, and
(5) When the start condition is generated, the IRIC and IRTR flags are set to 1. If the IEIC bit in
Legend
S
SLA
R/W
A
DATA
P
SDA
SCL
2
C bus format master transmit mode, the master device outputs the transmit clock and transmit
in STCR, according to the operation mode.
generates the start condition.
ICCR has been set to l, an interrupt request is sent to the CPU.
S
Master Transmit Operation
Start condition. The master device drives SDA from high to low while SCL is high
Slave address, by which the master device selects a slave device
Indicates the direction of data transfer: from the slave device to the master device
when R/W is 1, or from the master device to the slave device when R/W is 0
Acknowledge. The receiving device (the slave in master transmit mode, or the master
in master receive mode) drives SDA low to acknowledge a transfer
Transferred data. The bit length is set by bits BC2 to BC0 in ICMR. The MSB-first or
LSB-first format is selected by bit MLS in ICMR
Stop condition. The master device drives SDA from low to high while SCL is high
2
C Bus Data Format Symbols
SLA
1-7
R/W
8
9
A
Figure 16.6 I
1-7
DATA
2
C Bus Timing
8
Rev. 4.00 Sep 27, 2006 page 523 of 1130
A
9
Section 16 I
1-7
DATA
2
C Bus Interface [Option]
8
REJ09B0327-0400
A/A
9
P