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UPD8748 डेटा पत्रक PDF( Datasheet डाउनलोड )


डेटा पत्रक - SINGLE CHIP 8-BIT MICROCOMPUTERS - NEC

भाग संख्या UPD8748
समारोह SINGLE CHIP 8-BIT MICROCOMPUTERS
मैन्युफैक्चरर्स NEC 
लोगो NEC लोगो 
पूर्व दर्शन
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<?=UPD8748?> डेटा पत्रक पीडीएफ

UPD8748 pdf
II. PD8048/8748/8035L.
The NEe J,LPD8048, J,LPD8748 and J,LPD8035L are single component, 8-bit, parallel
microprocessors using N-channel silicon gate MOS technology. The J,LPD8048/87,f8/
8035L efficiently function in control as well as arithmetic applications. The flexibility
of the instruction set allows for the direct set and reset of individual data bits within
the accumulator and the I/O port structure. Standard logic function implementation
is facilitated by the large variety of branch and table look-up instructions.
The J,LP08048/8748/8035L instruction set is comprised of" and 2 byte instructions
with over 70% single-byte and requiring only 1 or 2 cycles per instruction with over
50% single-cycle.
The J,LPD8048 series of microprocessors will function as stand alone microcomputers.
Their functions can easily be expanded using standard 8080Al8085A peripherals and
memories.
The J,LPD8048 contains the following functions usually found in external peripheral
devices: 1024 x 8 bits of ROM program memory; 64 x 8 bits of RAM data memory;
27 I/O lines; an 8-bit interval timer/event counter; oscillator and clock circuitry.
The J,LPD8748 differs from the J,LPD8048 only in its 1024 x 8-bit UV erasable
EPROM program memory instead of the 1024 x 8-bit ROM memory. It is useful in
preproduction or prototype applications where the software design has not yet been
finalized or in system designs whose quantities do not require a mask ROM.
The J,LPD8035L is intended for applications using external program memory only. It
contains all the features of the J,LPD8048 except the 1024 x 8-bit internal ROM. The
external program memory can be implemented using standard 8080A/8085A memory
products.
FUNCTIONAL
DESCRIPTION
BLOCK DIAGRAM
334
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