HD64F2145BTE20 Renesas Electronics America, HD64F2145BTE20 Datasheet - Page 496
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
-
- Current page: 496 of 847
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Section 16 I
Bit Bit Name
4
Rev. 3.00 Mar 21, 2006 page 440 of 788
REJ09B0300-0300
ICDRE
2
C Bus Interface (IIC) (Optional)
Initial Value R/W
0
R
Description
Transmit Data Write Request Flag
Indicates the ICDR (ICDRT) status in transmit mode.
0: Indicates that the data has been already written to ICDR
1: Indicates that data has been transferred from ICDRT to
[Setting conditions]
[Clearing conditions]
Note that if the ACKE bit is set to 1 with I
enabling acknowledge bit decision, ICDRE is not set when
data transmission is completed while the acknowledge bit
is 1.
When ICDRE is set due to the condition (2) above, ICDRE
is temporarily cleared to 0 when data is written to ICDR
(ICDRT); however, since data is transferred from ICDRT to
ICDRS immediately, ICDRE is set to 1 again. Do not write
data to ICDR when TRS = 0 because the ICDRE flag value
is invalid during the time.
(ICDRT) or ICDR is initialized.
ICDRS and is being transmitted, or the start condition
has been detected or transmission has been complete,
thus allowing the next data to be written to.
When the start condition is detected from the bus line
state with I
When I
SW bit in DDCSWR is set to 1).
When data is transferred from ICDRT to ICDRS.
1. When data transmission completed while ICDRE =
2. When data is written to ICDR in transmit mode after
When data is written to ICDR (ICDRT).
When the stop condition is detected with I
or serial format.
When 0 is written to the ICE bit.
When the IIC is internally initialized using the CLR3 to
CLR0 bits in DDCSWR.
0 (at the rise of the 9th clock pulse).
data transmission was completed while ICDRE = 1.
2
C bus mode is switched to formatless (when the
2
C bus format or serial format.
2
C bus format thus
2
C bus format
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