HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 37
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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MCU Operation Sequence: The MCU operates in the sequence shown in figures 16 to 18. It is reset by
an asynchronous RESET input, regardless of its state.
The low-power mode operation sequence is shown in figure 18. With the IE flag cleared and an interrupt
flag set together with its interrupt mask cleared, if a STOP/SBY instruction is executed, the instruction is
cancelled (regarded as an NOP) and the following instruction is executed. Before executing a STOP/SBY
instruction, make sure all interrupt flags are cleared or all interrupts are masked.
Interrupt
strobe
Direct transfer
timing
(LSON = 0, DTON = 1)
Subactive mode
Figure 16 MCU Operating Sequence (Power On)
t
RC
T:
:
Interrupt frame length
Oscillation stabilization period
Figure 15 Direct Transfer Timing
STOP/SBY
execution
RESET = 1?
Reset MCU
Power on
Internal execution
time
T
Yes
No
Oscillation
stabilization
time
t
RC
MCU operation
cycle
HD404328 Series
Active mode
33
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