DF2148BTE20 Renesas Electronics America, DF2148BTE20 Datasheet - Page 541

• 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

12. Note on ICDR read and ICCR access in slave transmit mode
Note: This restriction on usage can be canceled by setting the FNC1 and FNC0 bits to 1 in
In I
during the time shaded in figure 16.35. However, such read and write operations cause no
problem in interrupt handling processing that is generated in synchronization with the rising
edge of the 9th clock pulse because the shaded time has passed before making the transition to
interrupt handling.
To handle interrupts securely, be sure to keep either of the following conditions.
2
Read ICDR data that has been received so far or read/write from/to ICCR before starting
the receive operation of the next slave address.
Monitor the BC2 to BC0 bit counter in ICMR; when the count is 000 (8th or 9th clock
pulse), wait for at least two transfer clock times in order to read ICDR or read/write from/to
ICCR during the time other than the shaded time.
C bus interface slave transmit mode, do not read ICDR or do not read/write from/to ICCR
ICXR.
Figure 16.35 ICDR Read and ICCR Access Timing in Slave Transmit Mode
TRS bit
SDA
SCL
Address reception
R/W
8
The rise of the 9th clock is detected
Waveform at problem occurrence
A
9
ICDR read and ICCR read/write are disabled
(6 system clock period)
Section 16 I
Rev. 3.00 Mar 21, 2006 page 485 of 788
2
C Bus Interface (IIC) (Optional)
ICDR write
Data transmission
Bit 7
REJ09B0300-0300