IS89LV51
IS89LV51
CMOS SINGLE CHIP LOW VOLTAGE
8-BIT MICROCONTROLLER
with 4-Kbytes of FLASH
ISSI
GENERAL DESCRIPTION
ISSI
廬
廬
ADVANCE INFORMATION
OCTOBER 1998
FEATURES
鈥?80C51 based architecture
鈥?4-Kbytes of on-chip Reprogrammable Flash
Memory
鈥?128 x 8 RAM
鈥?Two 16-bit Timer/Counters
鈥?Full duplex serial channel
鈥?Boolean processor
鈥?Four 8-bit I/O ports, 32 I/O lines
鈥?Memory addressing capability
鈥?64K ROM and 64K RAM
鈥?Program memory lock
鈥?Lock bits (3)
鈥?Power save modes:
鈥?Idle and power-down
鈥?Six interrupt sources
鈥?Most instructions execute in 0.3
碌s
鈥?CMOS and TTL compatible
鈥?Maximum speed: 40 MHz @ Vcc = 3.3V
鈥?Operating Range: 3.3V to 5V,
鹵
10%
鈥?Industrial temperature available
鈥?Packages available:
鈥?40-pin DIP
鈥?44-pin PLCC
鈥?44-PIN PQFP
The
ISSI
IS89LV51 is a high-performance microcontroller
fabricated using high-density CMOS technology. The
CMOS IS89LV51 is functionally compatible with the
industry standard 80C51 microcontrollers.
The IS89LV51 is designed with 4-Kbytes of Flash
memory, 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;
an six-source, two-priority-level, nested interrupt structure;
and an on-chip oscillator and clock circuit. The IS89LV51
can be expanded using standard TTL compatible memory.
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
RxD/P3.0
TxD/P3.1
INT0/P3.2
INT1/P3.3
T0/P3.4
T1/P3.5
WR/P3.6
RD/P3.7
XTAL2
XTAL1
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
VCC
P0.0/AD0
P0.1/AD1
P0.2/AD2
P0.3/AD3
P0.4/AD4
P0.5/AD5
P0.6/AD6
P0.7/AD7
EA/VPP
ALE/PROG
PSEN
P2.7/A15
P2.6/A14
P2.5/A13
P2.4/A12
P2.3/A11
P2.2/A10
P2.1/A9
P2.0/A8
Figure 1. IS89LV51 Pin Configuration: 40-pin PDIP
This document contains ADVANCE INFORMATION. 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. 漏 Copyright 1998, Integrated Silicon Solution, Inc.
Integrated Silicon Solution, Inc. 鈥?1-800-379-4774
ADVANCE INFORMATION
MC020-0A
10/27/98
1