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UPD550 fiches techniques PDF

NEC - 4-BIT SINGLE CHIP MICROCOMPUTER

Numéro de référence UPD550
Description 4-BIT SINGLE CHIP MICROCOMPUTER
Fabricant NEC 
Logo NEC 





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UPD550 fiche technique
NEe Microcomputers, Inc.
4-81T SINGLE CHIP MICROCOMPUTER
NEe
fLPD550
OESCR IPTION
The f,lPD550 is a f,lCOM-45 4-bit single chip microcomputer with high voltage outputs
that can be pulled to - 35V for direct interfacing to vacuum fluorescent displays_ The
f,lPD550 is manufactured with a standard PMOS process, allowing use of a single -10V
power supply_ The f,lPD550 provides all of the hardware features of the f,lCOM-45
family, except that it has a 640 x 8 bit ROM to reduce device cost_ The f,lPD550 exe-
cutes all 58 instructions of the f,lCOM-45 instruction set_
PIN CONFIGURATION
Cll
PCo
PCl
PC2
PC3
PDO
PDl
PD2
PD3
PEO
PEl
PE2
PE3
VSS
Clo
VGG
RESET
iN'f
PA3
PA2
PAl
PAO
PGO
PF3
PF2
PFl
PFo
TEST
PIN NAMES
PAO-PA3
PCO-PC3
PDO-PD3
PEO-PE3
PFO-PF3
f'GO
ClO-Cll
INT
RESET
VGG
VSS
TEST
Input Port A
Input/Output Port C
Input/Output Port D
Output Port E
Output Port F
Output Port G
External Clock Signals
Interrupt Input
Reset
Power Suppl y Negative
Power Supply Positi ve
Factorv Test Pi n
(Connect to VSSI
II
ABSOLUTE MAXIMUM
RATINGS·
Operating Temperature_ . , . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-10·C to +70·C
Storage Temparature .... _............. _. _..... _..... -40·Cto+125·C
Supply Voltage ... _............ __ . _................-15 to +0_3 Volts
Input Voltages (Port A, iNT, RESET) ..... __ ..............-15 to +0.3 Volts
(Ports C, 0) .... _. . . . . . . . . . . . . . . . . . . . . . .-40 to +0.3 Volts
Output Voltages . . . . . . . . . . . . . . . . . . . . . . _............- 40 to +0.3 Volts
Output Current (Ports C, 0, each bit) .............. , ..... _...... -4 mA
(Ports E, F, G, each bit) . . . . . . . . . . . . . . . . . . . . . . . . . -15 mA
(Total, all ports) .. _... _. . . . . . . . . . . . . . . . . . . . _. -60 mA
COMMENT: Stress above those listed under "Absolute Maximum Ratings" may cause permanent
damage to the device. This is a stress rating only and functional operation of the device at these or
any other conditions above those indicated in the operational sections of this specification is not
implied. Exposure to absolute maximum rating conditions for extended periods may affect device
reliability.
195

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