DS80C320QNL Dallas Semiconductor, DS80C320QNL Datasheet
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DS80C320QNL
Manufacturer Part Number
DS80C320QNL
Description
PLCC
Manufacturer
Dallas Semiconductor
Datasheet
1.DS80C320ECL.pdf
(38 pages)
Specifications of DS80C320QNL
Date_code
05+
FEATURES
DESCRIPTION
The DS80C320/DS80C323 is a fast 80C31/80C32–
compatible microcontroller. Wasted clock and memory
cycles have been removed using a redesigned proces-
sor core. As a result, every 8051 instruction is executed
between 1.5 and 3 times faster than the original for the
same crystal speed. Typical applications will see a
speed improvement of 2.5 times using the same code
and same crystal. The DS80C320 offers a maximum
crystal rate of 33 MHz, resulting in apparent execution
speeds of 82.5 MHz (approximately 2.5X).
80C32–Compatible
High–speed architecture
High integration controller includes:
Two full–duplex hardware serial ports
13 total interrupt sources with six external
Available in 40–pin DIP, 44–pin PLCC and TQFP
– 8051 Pin and instruction set compatible
– Four 8–bit I/O ports
– Three 16–bit timer/counters
– 256 bytes scratchpad RAM
– Addresses 64KB ROM and 64KB RAM
– 4 clocks/machine cycle (8032=12)
– DC to 33 MHz (DS80C320)
– DC to 18 MHz (DS80C323)
– Single–cycle instruction in 121 ns
– Uses less power for equivalent work
– Dual data pointer
– Optional variable length MOVX to access fast/
– Power–fail reset
– Programmable Watchdog timer
– Early–warning power–fail interrupt
slow RAM/peripherals
High–Speed/Low–Power Micro
PIN ASSIGNMENT
P1.2/RXD1
P3.0/RXD0
P1.1/T2EX
P1.3/TXD1
P3.1/TXD0
P1.4/INT2
P1.5/INT3
P1.6/INT4
P1.7/INT5
P3.2/INT0
P3.3/INT1
P3.6/WR
P3.7/RD
P1.0/T2
P3.4/T0
P3.5/T1
XTAL2
XTAL1
17
34
44
7
GND
RST
DS80C320/DS80C323
18
6
33
1
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
44–PIN PLCC
DS80C320
DS80C323
DS80C320
DS80C323
DALLAS
44–PIN TQFP
DALLAS
DS80C320
DS80C323
40–PIN DIP
DALLAS
1
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
40
28
23
11
DS80C320/DS80C323
39
29
EA
PSEN
VCC
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
ALE
A15 (P2.7)
A14 (P2.6)
A13 (P2.5)
A12 (P2.4)
A11 (P2.3)
A10 (P2.2)
A9 (P2.1)
A8 (P2.0)
22
12
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