DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 614
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 17 Keyboard Buffer Controller
17.3
17.3.1
In a receive operation, both KCLK (clock) and KD (data) are outputs on the keyboard side and
inputs on the H8S/2148 Group chip (system) side. KD receives a start bit, 8 data bits (LSB-first),
an odd parity bit, and a stop bit, in that order. The KD value is valid when KCLK is low. A sample
receive processing flowchart is shown in figure 17.3, and the receive timing in figure 17.4.
Rev. 4.00 Sep 27, 2006 page 568 of 1130
REJ09B0327-0400
Operation
Receive Operation
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