UPD70325L-8 Datasheet PDF - NEC
Part Number | UPD70325L-8 | |
Description | V25+TM 16/8-BIT SINGLE-CHIP MICROCONTROLLER | |
Manufacturers | NEC | |
Logo | ||
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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 single-
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 Japan
The mark shows major revised points.
© 11999965
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84-Pin Plastic QFJ
µPD70325L-8
µPD70325L-10
µPD70325
P07/CLKOUT
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
A2
A3
A4
A5
A6
A7
A8
A9
A10
A11
11 10 9 8 7 6 5 4 3 2 1 84 83 82 81 80 79 78 77 76 75
12 74
13 73
14 72
15 71
16 70
17 69
18 68
19 67
20 66
21 65
22 64
23 63
24 62
25 61
26 60
27 59
28 58
29 57
30 56
31 55
32 54
33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
PT7
PT6
PT5
PT4
PT3
PT2
PT1
PT0
P17/READY
P16/SCK0
P15/TOUT
P14/INT/POLL
P13/INTP2/INTAK
P12/INTP1
P11/INTP0
NMI (P10)
P27/HLDRQ
P26/HLDAK
P25/TC1
P24/DMAAK1
P23/DMARQ1
Remark IC: Internally Connected
Cautions 1. Fix IC pin individually to high level via a pull-up resistor externally.
2 Fix EA pin to low level.
5
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Information | Total 30 Pages | |
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Download | [ UPD70325L-8.PDF Datasheet ] |
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