DF2148BFA20 Renesas Electronics America, DF2148BFA20 Datasheet - Page 510
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DF2148BFA20
Manufacturer Part Number
DF2148BFA20
Description
IC H8S MCU FLASH 128K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148BFA20
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-QFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Other names
HD64F2148BFA20
HD64F2148BFA20
HD64F2148BFA20
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Section 16 I
The reception procedure and operations using the wait function (WAIT bit), by which data is
sequentially received in synchronization with ICDR (ICDRR) read operations, are described
below.
The following describes the multiple-byte reception procedure. In single-byte reception, some
steps of the following procedure are omitted. At this time, follow the procedure shown in figure
16.15.
1. Clear the TRS bit in ICCR to 0 to switch from transmit mode to receive mode.
2. When ICDR is read (dummy data is read), reception is started, the receive clock is output in
3. The IRIC flag is set to 1 in either of the following cases. If the IEIC bit in ICCR has been set to
4. Read the IRTR flag in ICSR.
5. If IRTR flag is 1, read ICDR receive data.
6. Clear the IRIC flag. When the flag is set as the first case in step [3], the master device outputs
Data can be received continuously by repeating steps [3] to [6].
7. Set the ACKB bit in ICSR to 1 so as to return the acknowledge data for the last reception.
8. After the IRIC flag is set to 1, wait for at least one clock pulse until the rise of the first clock
9. Set the TRS bit in ICCR to 1 to switch from receive mode to transmit mode. The TRS bit value
10. Read the ICDR receive data.
Rev. 3.00 Mar 21, 2006 page 454 of 788
REJ09B0300-0300
Clear the ACKB bit in ICSR to 0 to set the acknowledge data.
Clear the HNDS bit in ICXR to 0 to cancel the handshake function.
Clear the IRIC flag to 0, and then set the WAIT bit in ICMR to 1.
synchronization with the internal clock, and data is received.
1, an interrupt request is sent to the CPU.
If the IRTR flag is 0, execute step [6] to clear the IRIC flag to 0 to release the wait state.
If the IRTR flag is 1 and the next data is the last receive data, execute step [7] to halt reception.
the 9th clock and drives SDA low at the 9th receive clock pulse to return an acknowledge
signal.
pulse for the next receive data.
becomes valid when the rising edge of the next 9th clock pulse is input.
At the fall of the 8th receive clock pulse for one frame
SCL is automatically fixed low in synchronization with the internal clock until the IRIC
flag clearing.
At the rise of the 9th receive clock pulse for one frame
The IRTR and ICDRF flags are set to 1, indicating that one frame of data has been
received. The master device outputs the receive clock continuously to receive the next data.
2
C Bus Interface (IIC) (Optional)
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