HD64F2145BTE20 Renesas Electronics America, HD64F2145BTE20 Datasheet - Page 535
HD64F2145BTE20
Manufacturer Part Number
HD64F2145BTE20
Description
IC H8S MCU FLASH 256K 100-QFP
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of HD64F2145BTE20
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
256KB (256K x 8)
Program Memory Type
FLASH
Ram Size
8K 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
-
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7. Notes on ICDR read at end of master reception
Clearing of the MST bit after completion of master transmission/reception, or other modifications
of IIC control bits to change the transmit/receive operating mode or settings, must be carried out
during interval (a) in figure 16.30 (after confirming that the BBSY bit in ICCR has been cleared to
0).
Note: This restriction on usage can be canceled by setting the FNC1 and FNC0 bits to 1 in
Internal clock
To halt reception at the end of a receive operation in master receive mode, set the TRS bit to 1
and write 0 to BBSY and SCP in ICCR. This changes SDA from low to high when SCL is
high, and generates the stop condition. After this, receive data can be read by means of an
ICDR read, but if data remains in the buffer the ICDRS receive data will not be transferred to
ICDR (ICDRR), and so it will not be possible to read the second byte of data.
If it is necessary to read the second byte of data, issue the stop condition in master receive
mode (i.e. with the TRS bit cleared to 0). When reading the receive data, first confirm that the
BBSY bit in ICCR is cleared to 0, the stop condition has been generated, and the bus has been
released, then read ICDR with TRS cleared to 0.
Note that if the receive data (ICDR data) is read in the interval between execution of the
instruction for issuance of the stop condition (writing of 0 to BBSY and SCP in ICCR) and the
actual generation of the stop condition, the clock may not be output correctly in subsequent
master transmission.
BBSY bit
ICXR.
SCL
SDA
Master receive mode
Bit 0
8
Figure 16.30 Notes on Reading Master Receive Data
(write 0 to BBSY and SCP)
for issuing stop condition
Execution of instruction
A
9
disabled period
ICDR read
Confirmation of stop
condition issuance
(read BBSY = 0)
Section 16 I
Rev. 3.00 Mar 21, 2006 page 479 of 788
Stop condition
2
C Bus Interface (IIC) (Optional)
(a)
Start condition
REJ09B0300-0300
issuance
Start condition
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