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D70325L-8

NEC
Part Number D70325L-8
Manufacturer NEC
Description UPD70325L-8
Published Sep 25, 2008
Detailed Description DATA SHEET MOS INTEGRATED CIRCUIT µPD70325 V25+TM 16/8-BIT SINGLE-CHIP MICROCONTROLLER The µPD70325 (V25+) is a sing...
Datasheet PDF File D70325L-8 PDF File

D70325L-8
D70325L-8

Overview
DATA SHEET MOS INTEGRATED CIRCUIT µPD70325 V25+TM 16/8-BIT SINGLE-CHIP MICROCONTROLLER The µPD70325 (V25+) is a single-chip microcontroller on which 16-bit CPU, RAM, serial interface, timer, DMA controller, interrupt controller, etc.
are all integrated.
The µPD70325 is software compatible with the 16/8-bit singlewww.
DataSheet4U.
com chip microcontroller µPD70320 (V25TM).
The V25+ greatly improves the DMA responsivity and transfer rate compared to the V25.
FEATURES • • • • • • • • • • • Software compatible with V25 Software compatible with µPD70108/70116 (in native mode) (some instructions added) Internal 16-bit architecture and external 8-bit data bus 3-stage pipeline method Minimum instruction cycle : 250 ns/8 MHz (external 16 MHz) : 200 ns/10 MHz (external 20 MHz) Memory space 1 Mbyte On-chip RAM : 256 words × 8 bits Register bank (memory mapped method) : 8 banks Input port (port T) with comparator : 8 bits I/O lines (input port : 4 bits, input/output ports : 20 bits) Serial interface : 2 channels • Internal dedicated baud rate generator • Asynchronous mode and I/O interface mode • Interrupt controller • Programmable priority (8 levels) • 3 types of interrupt response method Vectored interrupt function, register bank switching function, macro service function • • DRAM and pseudo SRAM refreshing function DMA controller : 2 channels • 4 types of DMA transfer mode • Transfer rate Maximum 4 Mbytes/second (when stop control is not executed by DMARQ pin in demand release mode) Maximum 2 Mbytes/second (when stop control is executed by DMARQ pin in demand release mode, or burst mode) • Address pointer (linear) : 20 bits • Terminal counter : 16 bits • • • • • 16-bit timer : 2 channels Time base counter (20 bits) : 1 channel On-chip clock generator Programmable wait function Standby function (STOP, HALT) The information in this document is subject to change without notice.
Document No.
U12850EJ7V0DS00 (7th edition) Date Published November 1997 N Printed in Jap...


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