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8242AH Schematic ( PDF Datasheet ) - Intel

Teilenummer 8242AH
Beschreibung Universal Peripheral Interface 8-Bit Slave Microcontroller
Hersteller Intel
Logo Intel Logo 




Gesamt 20 Seiten
8242AH Datasheet, Funktion
UPI-41AH 42AH
UNIVERSAL PERIPHERAL INTERFACE
8-BIT SLAVE MICROCONTROLLER
Y UPI-41 6 MHz UPI-42 12 5 MHz
Y Pin Software and Architecturally
Compatible with all UPI-41 and UPI-42
Products
Y 8-Bit CPU plus ROM OTP EPROM RAM
I O Timer Counter and Clock in a
Single Package
Y 2048 x 8 ROM OTP 256 x 8 RAM on
UPI-42 1024 x 8 ROM OTP 128 x 8
RAM on UPI-41 8-Bit Timer Counter 18
Programmable I O Pins
Y One 8-Bit Status and Two Data
Registers for Asynchronous Slave-to-
Master Interface
Y DMA Interrupt or Polled Operation
Supported
Y Fully Compatible with all Intel and Most
Other Microprocessor Families
Y Interchangeable ROM and OTP EPROM
Versions
Y Expandable I O
Y Sync Mode Available
Y Over 90 Instructions 70% Single Byte
Y Available in EXPRESS
Standard Temperature Range
Y inteligent Programming Algorithm
Fast OTP Programming
Y Available in 40-Lead Plastic and 44-
Lead Plastic Leaded Chip Carrier
Packages
(See Packaging Spec Order 240800-001)
Package Type P and N
The Intel UPI-41AH and UPI-42AH are general-purpose Universal Peripheral Interfaces that allow the designer
to develop customized solutions for peripheral device control
They are essentially ‘‘slave’’ microcontrollers or microcontrollers with a slave interface included on the chip
Interface registers are included to enable the UPI device to function as a slave peripheral controller in the MCS
Modules and iAPX family as well as other 8- 16- and 32-bit systems
To allow full user flexibility the program memory is available in ROM and One-Time Programmable EPROM
(OTP) All UPI-41AH and UPI-42AH devices are fully pin compatible for easy transition from prototype to
production level designs
210393 – 2
Figure 1 DIP Pin Configuration
November 1994
210393 – 3
Figure 2 PLCC Pin Configuration
Order Number 210393-008
Free Datasheet http://www.datasheet4u.com/






8242AH Datasheet, Funktion
UPI-41AH 42AH
210393 – 11
Figure 8 UPI-41AH 42AH 80-Column
Matrix Printer Interface
PROGRAMMING AND VERIFYING THE
8741AH AND 8742AH OTP EPROM
Programming Verification
In brief the programming process consists of acti-
vating the program mode applying an address
latching the address applying data and applying a
programming pulse Each word is programmed com-
pletely before moving on to the next and is followed
by a verification step The following is a list of the
pins used for programming and a description of their
functions
Pin Function
XTAL 1 2 Clock Inputs
Reset Initialization and Address Latching
Test 0 Selection of Program or Verify Mode
EA Activation of Program Verify Signature
Row Security Bit Modes
BUS
Address and Data Input
Data Output During Verify
P20–22 Address Input
VDD Programming Power Supply
PROG Program Pulse Input
WARNING
An attempt to program a missocketed 8741AH or 8742AH will result in
severe damage to the part An indication of a properly socketed part is
the appearance of the SYNC clock output The lack of this clock may
be used to disable the programmer
The Program Verify sequence is
1 CS e 5V VCC e 5V VDD e 5V RESET e 0V
A0 e 0V TEST 0 e 5V clock applied or internal
oscillator operating BUS floating PROG e 5V
2 Insert 8741AH or 8742AH in programming socket
3 TEST 0 e 0V (select program mode)
4 EA e 12 5V (active program mode)
5 VCC e 6V (programming supply)
6 VDD e 12 5V (programming power)
7 Address applied to BUS and P20–22
8 RESET e 5V (latch address)
9 Data applied to BUS
10 PROG e 5V followed by one 1 ms pulse to 0V
11 TEST 0 e 5V (verify mode)
12 Read and verify data on BUS
13 TEST 0 e 0V
14 Apply overprogram pulse
15 RESET e 0V and repeat from step 6
16 Programmer should be at conditions of step 1
when 8741AH or 8742AH is removed from socket
Please follow the inteligent Programming flow chart
for proper programming procedure
inteligent Programming Algorithm
The inteligent Programming Algorithm rapidly pro-
grams Intel 8741AH 8742AH EPROMs using an effi-
cient and reliable method particularly suited to the
production programming environment Typical pro-
gramming time for individual devices is on the order
of 10 seconds Programming reliability is also en-
sured as the incremental program margin of each
byte is continually monitored to determine when it
has been successfully programmed A flowchart of
the 8741AH 8742AH inteligent Programming Algo-
rithm is shown in Figure 9
The inteligent Programming Algorithm utilizes two
different pulse types initial and overprogram The
duration of the initial PROG pulse(s) is one millisec-
ond which will then be followed by a longer overpro-
gram pulse of length 3X msec X is an iteration coun-
ter and is equal to the number of the initial one milli-
second pulses applied to a particular 8741AH
8742AH location before a correct verify occurs Up
to 25 one-millisecond pulses per byte are provided
for before the overprogram pulse is applied
6
Free Datasheet http://www.datasheet4u.com/

6 Page









8242AH pdf, datenblatt
UPI-41AH 42AH
D C CHARACTERISTICS TA e 0 C to a70 C VCC e VDD e a5V g10% (Continued)
Symbol
Parameter
UPI-41AH 42AH Units
Min Max
Notes
VOL1
VOL2
VOH
VOH1
IIL
IOFL
Output Low Voltage (P10P17 P20P27 Sync)
Output Low Voltage (PROG)
Output High Voltage (D0 – D7)
Output High Voltage (All Other Outputs)
Input Leakage Current (T0 T1 RD WR CS A0 EA)
Output Leakage Current (D0 – D7 High Z State)
24
24
ILI Low Input Load Current (P10P17 P20P27)
ILI1 Low Input Load Current (RESET SS)
IDD VDD Supply Current
ICC a IDD Total Supply Current
IDD Standby Power Down Supply Current
IIH Input Leakage Current (P10 – P17 P20 – P27)
CIN Input Capacitance
CIO I O Capacitance
0 45
0 45
g10
g10
03
02
20
135
20
100
10
20
V IOL e 1 6 mA
V IOL e 1 0 mA
V IOH e b400 mA
IOH e b50 mA
mA VSS s VIN s VCC
mA VSS a0 45
s VOUT s VCC
mA VIL e 0 8V
mA VIL e 0 8V
mA Typical e 8 mA
mA Typical e 80 mA
mA Typical e 8 mA
mA VIN e VCC
pF TA e 25 C (1)
pF TA e 25 C (1)
NOTE
1 Sampled not 100% tested
D C CHARACTERISTICS PROGRAMMING
TA e 25 C g5 C VCC e 6V g0 25V VDD e 12 5V g0 5V
Symbol
Parameter
VDDH
VDDL
VPH
VPL
VEAH
VEAL
IDD
IEA
VDD Program Voltage High Level
VDD Voltage Low Level
PROG Program Voltage High Level
PROG Voltage Low Level
Input High Voltage for EA
EA Voltage Low Level
VDD High Voltage Supply Current
EA High Voltage Supply Current
Min
12
4 75
20
b0 5
12 0
b0 5
Max
13
5 25
55
08
13 0
5 25
50 0
10
NOTES
1 Voltages over 13V applied to pin VDD will permanently damage the device
2 VEAH must be applied to EA before VDDH and removed after VDDL
3 VCC must be applied simultaneously or before VDD and must be removed simultaneously or after VDD
Units
V(1)
V
V
V
V(2)
V
mA
mA
12
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12 Page





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