DF2148RTE20IV Renesas Electronics America, DF2148RTE20IV Datasheet - Page 644
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 18 Host Interface
this pin by sending commands and data. This function is available only when register IDR1 is
accessed using CS1. Slave logic decodes the commands input from the host processor. When an
H'D1 host command is detected, bit 1 of the data following the host command is output from the
GA20 output pin. This operation does not depend on firmware or interrupts, and is faster than the
regular processing using interrupts. Table 18.6 lists the conditions that set and clear GA20 (P81).
Figure 18.2 shows the GA20 output in flowchart form. Table 18.7 indicates the GA20 output
signal values.
Table 18.6 GA20 (P81) Set/Clear Timing
Pin Name
GA20
(P81)
Rev. 4.00 Sep 27, 2006 page 598 of 1130
REJ09B0327-0400
Setting Condition
Rising edge of the host’s write signal
(IOW) when bit 1 of the written data is 1
and the data follows an H'D1 host
command
No
No
Figure 18.2 GA20 Output
Write bit 1 of data byte
to DR bit of P81/GA20
Wait for next byte
H'D1 command
Data byte?
received?
Start
Yes
Yes
Host write
Host write
Clearing Condition
Rising edge of the host’s write signal
(IOW) when bit 1 of the written data is 0
and the data follows an H'D1 host
command
Also, when bit FGA20E in HICR is cleared
to 0
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