HD4074329S Renesas Electronics America, HD4074329S Datasheet - Page 34
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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
Stop Mode: The MCU enters stop mode if the STOP instruction is executed in active mode when TMA3 =
0. In this mode, the system oscillator stops, which stops all MCU functions as well.
The stop mode is terminated by a RESET input as shown in figure 12. RESET must be high for at least one
t
is cancelled, all RAM contents are retained, but the accuracy of the contents of the accumulator, B register,
W register, X/SPX register, Y/SPY register, carry flag, and serial data register cannot be guaranteed.
Watch Mode: The MCU enters watch mode if the STOP instruction is executed in active mode when
TMA3 = 1, or if the STOP or SBY instruction is executed in subactive mode.
The watch mode is terminated by a RESET input or a timer-A/INT
RESET input, refer to the Stop Mode section. When terminated by a timer-A/INT
MCU enters active mode if LSON is 0, or subactive mode if LSON is 1. After an interrupt request is
generated, the time required to enter active mode is t
2T + t
30
RC
to stabilize oscillation (refer to the AC Characteristics section). When the MCU restarts after stop mode
RC
Oscillator
Internal clock
RESET
) for an INT
0
STOP instruction execution
interrupt, as shown in figures 13 and 14.
Figure 12 Timing of Stop Mode Cancellation
Stop mode
RC
for a timer A interrupt, and T
t
res
t
RC
(stabilization time)
t
res
0
interrupt request. For details of
X
0
(where T + t
interrupt request, the
RC
< T
X
<
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