MOSEL VITELIC INC.
Preliminary
MV20556
8 - Bit MCU Mouse Controller
Bit operation instructions
Page free jumps
8 - bit Unsigned Division
8 - bit Unsigned Multiply
BCD arithmatic
Direct Addressing
Indirect Addressing
Nested Interrupt
Two priority level interrupt
A full duplex serial I/O port
Working at 16/25/40 MHz Clock
Full static operation: 3 MHz through 16 MHz
July 1997
Features
General 8051 instruction family compatible
Operate at voltage 5.0V.
No External Memory is supported
8 bit bus I/O ports
4 K byte ROM
128 byte RAM
128 byte depth stack
Two 16 bit Timers (Event Counters)
15 programmable I/O pins
Five interrupt sources
Programmable serial UART channel
Direct LED drive output
Description
The MVI MV20556 is an 8 - bit single chip
microcontroller. It provides hardware features and
powerful instruction set that are necessary to make it a
versatile and cost effective controller for mouse
applications which needs up to 4K byte internal
memory either for program or for data and mixed.
A serial input / output port is provided for I/O
expansion, Inter - processor communications, full
duplex UART.
Pin Configuration
RES
RXD/P 3.0
TXD/P 3.1
XTA2
XTAL1
#INT0/P 3.2
#INT1/P 3.3
T0/P 3.4
1
2
3
4
5
6
7
8
9
10
20
19
VDD
P 1.7
P 1.6
P 1.5
P 1.4
P 1.3
P 1.2
P 1.1
P 1.0
P 3.7
MV20556
20L PDIP
300 mil
(Top View)
20L SOP
(Top View)
18
17
16
15
14
13
12
11
Ordering Information
MV20556ajk - pqrs
a: process identifier. { C:=COMS }
jk: working clock in MHz. { 16 }
pqr: production code { 001, ..., 999 }
s: package type. { P: 20L 300 mil PDIP }
Pin/Pad
Postfix
blank
N
S
Package
dice
20L PDIP
20L SOP
Configuration
page 25
page 1
page 1
Dimension
page 25
page 23
page 24
T1/P 3.5
VSS
Logo Size at
Top Marking
-
4.5 x 3.8 mm
4.0 x 3.4 mm
Specifications subject to change without notice, contact your sales representatives for the most recent information.
1/27
PID256** 07/97
MOSEL [ MOSEL VITELIC, CORP ]
