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PDF UPD78P368A Data sheet ( Hoja de datos )
| Número de pieza | UPD78P368A | |
| Descripción | 16/8 BIT SINGLE-CHIP MICROCOMPUTER | |
| Fabricantes | NEC | |
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DATA SHEET
MOS INTEGRATED CIRCUIT
mPD78P368A
16/8 BIT SINGLE-CHIP MICROCOMPUTER
The mPD78P368A is produced by replacing the internal mask ROM of the mPD78366A with a one-time PROM
or EPROM. One-time PROM products, in which data can be written once are effective for manufacture of small
quantities of multiple products and early stage start-up of application. EPROM products, to which programs can
be re-written after previously written programs have been erased, are suited for system evaluation.
The following user's manual describes the details of functions. Be sure to read it before design.
mPD78366A User's Manual, Hardware: U10205E
mPD78356 User's Manual, Instructions: IEU-1395
FEATURES
• Compatible with the mPD78366A
• Can be replaced with the mPD78366A containing mask ROM on a full-production basis.
• Internal PROM: 48K bytes
• Data can be written once (one-time PROM product without an erasure window)
• Written data can be erased by exposure to ultraviolet light and re-written electrically (EPROM product with an
erasure window)
• PROM programming characteristics: Compatible with the mPD27C1001A
• QTOPTM microcomputer
Remark The QTOP microcomputer is a single-chip microcomputer with a built-in one-time PROM that is totally
supported by NEC. The support includes writing application programs, marking, screening, and
verification.
ORDERING INFORMATION
Part number
mPD78P368AGF-3B9
mPD78P368AKL-SNote
Note Under development
Package
80-pin plastic QFP (14 ¥ 20 mm)
80-pin ceramic WQFN
Internal ROM
One-time PROM
EPROM
In this manual, the description of the PROM is for both a one-time PROM and EPROM.
The information in this document is subject to change without notice.
Document No. U11373EJ1V0DS00 (1st edition)
(Previous No. IP-3680)
Date Published June 1996 P
Printed in Japan
The mark H shows major revised points.
©
11999906
1 page  
A0-A16: Address bus
D0-D7: Data bus
CE: Chip enable
OE: Output enable
PGM: Programming mode
mPD78P368A
MODE0, MODE1:
VPP:
VDD:
VSS:
Programming mode set
Programming power supply
Power supply
Ground
5
5 Page 
mPD78P368A
1.3 INPUT/OUTPUT CIRCUIT TYPE FOR EACH PIN AND HANDLING OF UNUSED PINS
Table 1-1 lists the input and output circuit type for each pin and how to handle it when it is not used. Fig. 1-1 shows
the circuits.
Table 1-1 Input/Output Circuit Type for Each Pin and Recommended Connection Methods for Unused
Pins
Pin
P00/RTP0-P03/RTP3
P04/PWM0
P05/TCUD/PWM1
P06/TIUD/TO40
P07/TCLRUD
P10-P17
P20/NMI
P21/INTP0
P22/INTP1
P23/INTP2
P24/INTP3/TI
P25/INTP4
P30/TxD0
P31/RxD0
P32/SO/SB0
P33/SI/SB1
P34/SCK
P35/TxD1
P36/RxD1
P40/AD0-P47/AD7
P50/A8-P57/A15
P70/ANI0-P77/ANI7
P80/TO00-P85/TO05
P90/RD
P91/WR
P92, P93
ASTB
WDTO
MODE0, MODE1
RESET
AVREF, AVSS
AVDD
I/O circuit type
5-A
Recommended connection method
Input state:
Output state:
Each pin is connected to the VDD or
VSS pin via a separate resistor.
Open
2 Connected to the VSS pin.
2-A
5-A Input state: Each pin is connected to the VDD or
VSS pin via a separate resistor.
Output state: Open
8-A
5-A
9 Connected to the VSS pin.
5-A Input state: Each pin is connected to the VDD or
VSS pin via a separate resistor.
Output state:
Open
5
19 Connected to the VSS pin.
1–
2
– Connected to the VSS pin.
Connected to the VDD pin.
11
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