DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 582
DF2148RTE20IV
Manufacturer Part Number
DF2148RTE20IV
Description
MCU 5V 128K I-TEMP,PB-FREE, 100-
Manufacturer
Renesas Electronics America
Series
H8® H8S/2100r
Specifications of DF2148RTE20IV
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
-40°C ~ 85°C
Package / Case
100-TQFP, 100-VQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
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Section 16 I
16.3.9
The logic levels at the SCL and SDA pins are routed through noise cancelers before being latched
internally. Figure 16.13 shows a block diagram of the noise canceler circuit.
The noise canceler consists of two cascaded latches and a match detector. The SCL (or SDA)
input signal is sampled on the system clock, but is not passed forward to the next circuit unless the
outputs of both latches agree. If they do not agree, the previous value is held.
16.3.10 Sample Flowcharts
Figures 16.14 to 16.17 show sample flowcharts for using the I
Rev. 4.00 Sep 27, 2006 page 536 of 1130
REJ09B0327-0400
SCL or
SDA input
signal
Sampling
clock
Noise Canceler
2
C Bus Interface [Option]
D
Sampling clock
System clock
period
Latch
Figure 16.13 Block Diagram of Noise Canceler
C
Q
D
Latch
C
Q
2
C bus interface in each mode.
detector
Match
Internal
SCL or
SDA
signal
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