IS80LV51 Datasheet, PDF (1/43 Pages) Integrated Silicon Solution, Inc – CMOS SINGLE CHIP LOW VOLTAGE 8-BIT MICROCONTROLLER

I_IS_S80₈LV₀5_L1 _V51
I_IS_S80₈LV₀3_L1 _V31
CMOS SINGLE CHIP
LOW VOLTAGE
8-BIT MICROCONTROLLER
ISS^ISI^SI®®
ADVANCE INFORMATION
OCTOBER 1998
FEATURES
• 80C51 based architecture
• 4K x 8 ROM (IS80LV51 only)
• 128 x 8 RAM
• Two 16-bit Timer/Counters
• Full duplex serial channel
• Boolean processor
• Four 8-bit I/O ports, 32 I/O lines
• Memory addressing capability
– 64K ROM and 64K RAM
• Programmable lock
– Lock bits (2)
• Power save modes:
– Idle and power-down
• Six interrupt sources
• Most instructions execute in 0.3 µs
• CMOS and TTL compatible
• Maximum speed: 40 MHz @ Vcc = 3.3V
• Industrial temperature available
• Packages available:
– 40-pin DIP
– 44-pin PLCC
– 44-Pin PQFP
GENERAL DESCRIPTION
The ISSI IS80LV51 and IS80LV31 are high-performance
microcontrollers fabricated using high-density CMOS
technology. The CMOS IS80LV51/31 is functionally
compatible with the industry standard 80C51
microcontrollers.
The IS80LV51/31 is designed with 4K x 8 ROM (IS80LV51
only); 128 x 8 RAM; 32 programmable I/O lines; a serial
I/O port for either multiprocessor communications, I/O
expansion or full duplex UART; two 16-bit timer/counters;
a six-source, two-priority-level, nested interrupt structure;
and an on-chip oscillator and clock circuit. The
IS80LV51/31 can be expanded using standard TTL
compatible memory.
P1.0 1
P1.1 2
P1.2 3
P1.3 4
P1.4 5
P1.5 6
P1.6 7
P1.7 8
RST 9
RxD/P3.0 10
TxD/P3.1 11
INT0/P3.2 12
INT1/P3.3 13
T0/P3.4 14
T1/P3.5 15
WR/P3.6 16
RD/P3.7 17
XTAL2 18
XTAL1 19
GND 20
40 VCC
39 P0.0/AD0
38 P0.1/AD1
37 P0.2/AD2
36 P0.3/AD3
35 P0.4/AD4
34 P0.5/AD5
33 P0.6/AD6
32 P0.7/AD7
31 EA/VPP
30 ALE/PROG
29 PSEN
28 P2.7/A15
27 P2.6/A14
26 P2.5/A13
25 P2.4/A12
24 P2.3/A11
23 P2.2/A10
22 P2.1/A9
21 P2.0/A8
Figure 1. IS80LV51/31 Pin Configuration: 40-pin PDIP
This document contains ADVANCE INFORMATION data. ISSI reserves the right to make changes to its products at any time without notice in order to improve design and supply the best possible
product. We assume no responsibility for any errors which may appear in this publication. © Copyright 1998, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc.
1
ADVANCE INFORMATION MC018-0A
10/01/98