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MSM6404 датащи(PDF) 21 Page - OKI electronic componets

номер детали MSM6404
подробное описание детали  High speed and High performance 4-Bit Microcontroller
PDF  25 Pages
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производитель  OKI [OKI electronic componets]
домашняя страница  http://www.oki.com
Logo OKI - OKI electronic componets

MSM6404 датащи(HTML) 21 Page - OKI electronic componets

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MSM6404A/6404VS
¡ Semiconductor
Differences between MSM6404A and MSM6404VS (PIGGYBACK)
Item
MSM6404A
MSM6404VS (Piggyback)
1.
Ports P0, 1, 3 are set to "1" and ports P2, 4,
5, 6, 7, 8 are reset to "0" directly by the reset
input signal.
Ports P0, 1, 3 are set to "1" and ports P2, 4,
5, 6, 7, 8 are initialized during reset cycle.
After being reset, the timer continues to stop
until data is set in it.
It is undefined whether the timer starts or
not after being reset. Therefore, the timer
should be initialized by software.
Serial out F/F (SOF/F) is set to "0" after being
reset.
It is undefined whether serial out F/F
(SOF/F) is "0" or "1" after being reset.
Therefore the serial out F/F should be
initialized by software.
Port
initialization
during reset
2. Timer
operation
3. Shift register
Internal clock
Internal clock
Port
input/output
timing
4.
Input
Data are input
at this time.
Input
Data are input
at this time.
Internal clock
Synchronized
with falling edge
Data are output
at this time.
Data are output
at this time.
Output
TTL FO = "1"
(IOL = 1.6 mA @ 0.4 V)
LSTTL FO = "1"
(IOL = 0.4 mA @ 0.4 V)
Port
input/output
characteristics
5.
P2.0-3
P2.0-3
VDD
VDD VDD
TTL compatible input
CMOS input
P0.0-P8.3
P0.0-P8.3
(Except P2.0-3)
(Except P2.0-3)
Up to 4 Kbytes
Up to 8 Kbytes accessible
Available ROM
capacity
Not available
Available
LJP a13, LCAL a13
instruction
Internal clock
Output
6.
7.



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