UPI-452 Datasheet, PDF (7/53 Pages) Intel Corporation – CHMOS PROGRAMMABLE I/O PROCESSOR

UPI-452
UPI MICROCONTROLLER FAMILY
The UPI-452 joins the current members of the UPI
microcontroller family UPI’s are derivatives of the
MCS^TM family of microcontrollers Because of their
on-chip system bus interface UPI’s are designed to
be system bus ‘‘slaves’’ while their microcontroller
counterparts are intended as system bus ‘‘masters’’
These UPI Microcontrollers are fully supported by
Intel’s development tools (ICE ASM and PLM)
Packaging
The 80C452 83C452 is available in a 68-pin PLCC
package
UPI Family
(Slave
Configuration)
80C452
83C452
80C452-1
83C452-1
MCS Family
(Master
Configuration)
80C51
80C51
80C51
80C51
Speed
12 MHz
12 MHz
14 MHz
14 MHz
RAM
(Bytes)
256
256
256
256
ROM
(Bytes)
8K
8K
UPI-452 PIN DESCRIPTIONS
Symbol
Pin
Type
V_SS
9 43
I
V_CC
60
I
XTAL1
38
I
XTAL2
39
O
Port 0
IO
(AD0 – AD7)
P0 0
8
1
10
2
11
3
12
4
13
5
14
6
15
P0 7
16
Name and Function
Circuit Ground
a_{5V power supply during normal and idle mode operation It is also}
the standby power pin for power down mode
Input to the oscillator’s high gain amplifier A crystal or external
source can be used
Output from the high gain amplifier
Port 0 is an 8-bit open drain bi-directional I O port Port 0 can sink
eight LS TTL inputs It is also the multiplexed low-order address and
data local expansion bus during accesses to external memory
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