HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 59
HD4074329S
Manufacturer Part Number
HD4074329S
Description
MCU 4-Bit HMCS400 CISC 20KB EPROM 3.3V/5V 64-Pin SDIP
Manufacturer
Renesas Electronics America
Datasheet
1.HD4074329S.pdf
(98 pages)
Specifications of HD4074329S
Package
64SDIP
Family Name
HMCS400
Maximum Speed
4.5 MHz
Ram Size
268 Byte
Program Memory Size
20 KB
Operating Supply Voltage
3.3|5 V
Data Bus Width
4 Bit
Program Memory Type
EPROM
Number Of Programmable I/os
35
On-chip Adc
4-chx8-bit
Operating Temperature
-20 to 75 °C
Number Of Timers
3
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HD404328 Series
Transmission
completion (IFS
1)
Interrupts inhibited
IFS
0
SMR write
Yes
Transmit clock
IFS = 1?
error processing
No
Normal termination
Figure 33 Transmit Clock Error Detection
Note on Use: The serial interrupt request flag might not be set if the status is changed from transfer by the
execution of an SMR write or STS instruction during the first period that the transmit clock is low. To
prevent this, program a check that the SCK pin is at 1 (by executing an input instruction for the R1 port)
before the execution of an SMR write or STS instruction, to ensure that the serial interrupt request flag is
set.
55
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