SGS Thomson Microelectronics ETL9444 Datasheet

4-BIT NMOS MICROCONTROLLERS

.LOWCOST

.POWERFUL INSTRUCTIONSET

.2k x8 ROM, 128 x 4 RAM

.23 I/OLINES (ETL9444)

.TRUE VECTORED INTERRUPT, PLUS RES-

TART

.THREE-LEVELSUBROUTINESTACK

.16µs INSTRUCTIONTIME

.SINGLESUPPLYOPERATION(4.5-6.3V)

.LOWCURRENT DRAIN(13mA max.)

.INTERNALTIME-BASECOUNTER FORREAL-

TIMEPROCESSING

.INTERNAL BINARY COUNTER REGISTER

WITHMICROWIRE SERIALI/O CAPABILITY

.GENERALPURPOSE AND TRI-STATE

PUTS



OUT-

.LSTTL/CMOSCOMPATIBLEIN AND OUT

.DIRECTDRIVEOFLEDDIGITAND SEGMENT

LINES

.SOFTWARE/HARDWARE COMPATIBLE

WITHOTHER MEMBERSOF ET9400 FAMILY

.EXTENDED TEMPERATURE RANGE DE-

VICES
ETL9344/L9345 (– 40°Cto+85°C)

.WIDERSUPPLYRANGE (4.5 – 9.5V)

OPTIONALLY AVAILABLE

.SOIC 24/28 AND PLCC 28 PACKAGES AVAI-

LABLE

DESCRIPTION

The ETL9444/L9445 and ETL9344/L9345 Single­Chip N-Channel Microcontrollers are fully compati­ble with the COPS family, fabricated using
N-channel,silicongateXMOStechnology. Theyare
complete microcomputers containing all system ti­ming, internal logic,ROM, RAMand I/O necessary
to implement dedicated control functionsin avariety
of applications. Featuresinclude single supply ope­ration,avarietyof outputconfiguration options, with
an instruction set, internal architecture and I/O
scheme designed to facilitate keyboard input, dis­play output and BCD data manipulation. The
ETL9445isidenticalto theETL9444, exceptwith19
I/O lines instead of 23 : They are an appropriate
choicefor use innumerous humaninterface control
environments. Standard test procedures and relia­ble high-density fabrication techniques provide the
medium to large volume customerswith a customi-

ETL9444/ETL9445
ETL9344/ETL9345

ETL9444/ETL9344

N

(PlasticPackage)

ETL93 45/ETL9345

N

(PlasticPackage)

PIN CONNECTION

May1989

1/27

ETL9444/9445–ETL9344/9345

zed controller oriented processor at a low end-pro­duct cost.

Figure 1 : BlockDiagram (28-pin version).

The ETL9344/L9345 are exact functional equiva­lents, but extended temperature range versions of
theETL9444/L9445 respectively.

2/27

ETL9444/9445–ETL9344/9345

ETL944 4/L9445

ABSOLUTE M AXI MUM RATI NG S

Symbol Paramet e r Valu e Unit

Voltage at any Pin Relative to GND – 0.5 to + 10 V
Ambient Operating Temperature 0 to + 70 °C
Ambient Storage Temperature – 65 to + 150 °C
Lead Temperature (soldering, 10 seconds) 300 °C
Power Dissipation 0.75W at 25°C

0.4W at 70°C
Total Source Current 120 mA
Total Sink Current 120 mA

Absolute maximum ratings indicate limits beyond whichdamage to the device mayoccur. DC and AC electrical specifications are not en­sured when operating the device at absolute maximum ratings.

DC ELECTRICAL CHARACTERISTICS 0°C ≤TA≤ +70°C, 4.5V ≤ VCC≤ 9.5V
(unless otherwise specified)

Parameter Test Conditions Min. Max. Unit

Standard Operating Voltage (V
Optional Operating Voltage (V
Power Supply Ripple
Operating Supply Current

Input Voltage Levels

CKI Input Levels

Crystal Input (÷ 32, ÷ 16, ÷ 8)

Logic High (V
Logic Low (V

)

IH

)

IL

Schmitt Trigger Input (÷ 4)

Logic High (VIH)
Logic Low (V

)

IL

RESET Input Levels

Logic High

Logic Low
SO Input Level (test mode)
All Other Inputs

Logic High

Logic High

Logic Low

Logic High

Logic Low

Input Capacitance
Hi-Z Input Leakage

Output Voltage Levels

LSTTL Operation

Logic High (V

OH

)

Logic Low (VOL)

CMOS Operation

Logic High

Logic Low

Note : 1. VCCvoltagechange must be less than 0.5V in a 1ms period to maintain proper operation.

CC

CC

)

Note 1

)

Peak to Peak
All Inputs and Outputs Open

Schmitt Trigger Input

V

= Max.

CC

With TTL trip level options
selected, V

CC

With high trip level options
selected.

VCC=5V±5%
IOH=–25µA
IOL= 0.36mA

I

=–10µA

OH

IOL=+10µA

=5V±5%.

4.5

4.5

2.0

– 0.3

0.7 V

CC

– 0.3

0.7 V

CC

– 0.3

2.0

3.0

2.0

– 0.3

3.6

– 0.3

–1

2.7

VCC–1

6.3

9.5

0.5
13

0.4

0.6

0.6

2.5

0.8

1.2

7

+1

0.4

0.2

V
V
V

mA

V
V

V
V

V
V
V

V
V
V
V

V
pF
µA

V

V

V

V

3/27

ETL9444/9445–ETL9344/9345

ETL944 4/L9445
DC ELECTRICAL CHARACTERISTICS (continued)

Parameter Test Conditions Min. Max. Unit

Output Current Levels

Output Sink Current

SO and SK Outputs (I

L

Outputs and Standard

0-L7

G

0-G3,D0-D3

Outputs (IOL)

OL

)

G0-G3and D0-D3Outputs with
High Current Options (I

G

and D0-D3Outputs with

0-G3

OL

)

Very High Current Options (IOL)
CKI (single-pin RC oscillator)

CKO

Output Source Current

Standard Configuration,
All Outputs (I

OH

)

Push-pull Configuration
SO and SK Outputs (I

LED Configuration, L0-L

OH

)

7

Outputs, Low Current
Driver Option (IOH)
LED Configuration, L

0-L7

Outputs, High Current
Driver Option (IOH)
TRI-STATE Configuration,
L

Outputs, Low

0-L7

Current Driver Option (I

OH

)
TRI-STATE Configuration,
L0-L7Outputs, High
Current Driver Option (I

OH

)

Input Load Source Current
CKO Output

RAM Power Supply Option
Power Requirement V

TRI-STATE Output Leakage
Current – 2.5 + 2.5

Total Sink Current Allowed

All Outputs Combined
D, G Ports
L

7-L4

L3-L

0

All Other Pins

Total Source Current Allowed

All I/O Combined
L

7-L4

L3-L

0

Each L Pin
All Other Pins

V

= 9.5V, VOL= 0.4V

CC

VCC= 6.3V, VOL= 0.4V
V

= 4.5V, VOL= 0.4V

CC

VCC= 9.5V, VOL= 0.4V
V

= 6.3V, VOL= 0.4V

CC

VCC= 4.5V, VOL= 0.4V
VCC= 9.5V, VOL= 1.0V
V

= 6.3V, VOL= 1.0V

CC

VCC= 4.5V, VOL= 1.0V
V

= 9.5V, VOL= 1.0V

CC

VCC= 6.3V, VOL= 1.0V
VCC= 4.5V, VOL= 1.0V
V

= 4.5V, VIH= 3.5V

CC

VCC= 4.5V, VOL= 0.4V
V

= 9.5V, VOH= 2.0V

CC

VCC= 6.3V, VOH= 2.0V
V

= 4.5V, VOH= 2.0V

CC

VCC= 9.5V, VOH= 4.75V
V

= 6.3V, VOH= 2.4V

CC

VCC= 4.5V, VOH= 1.0V
V

= 9.5V, VOH= 2.0V

CC

VCC= 6.0V, VOH= 2.0V
V

= 9.5V, VOH= 2.0V

CC

VCC= 6.0V, VOH= 2.0V
V

= 9.5V, VOH= 5.5V

CC

VCC= 6.3V, VOH= 3.2V
V

= 4.5V, VOH= 1.5V

CC

VCC= 9.5V, VOH= 5.5V
VCC= 6.3V, VOH= 3.2V
V

= 4.5V, VOH= 1.5V

CC

VCC= 5.0V, VIL=0V

= 3.3V 6.0

R

1.8

1.2

0.9

0.8

0.5

0.4
15
11

7.5
30
22
15

2

0.2

–140

–75

–30
– 1.4
– 1.4
– 1.2

– 1.5
– 1.5

– 3.0
– 3.0

– 0.75

– 0.8
– 0.9
– 1.5
– 1.6
– 1.8

–10

–800
–480
–250

–140

–18
–13

–35
–25

120
120

4
4

1.5

120

60
60
30

1.5

mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA

µA
µA
µA

mA
mA
mA

mA
mA

mA
mA
mA
mA
mA
mA
mA
mA

µA

mA

µA

mA
mA
mA
mA
mA

mA
mA
mA
mA
mA

4/27

ETL9444/9445–ETL9344/9345

ETL934 4/L9345

ABSOLUTE M AXI MUM RATI NG S

Symbol Paramet e r Valu e Unit

Voltage at any Pin Relative to GND – 0.5 to + 10 V
Ambient Operating Temperature – 40 to + 85 °C
Ambient Storage Temperature – 65 to + 150 °C
Lead Temperature (soldering, 10 seconds) 300 °C
Power Dissipation 0.75W at 25°C

0.25W at 85°C
Total Source Current 120 mA
Total Sink Current 120 mA

Absolute maximum ratings indicate limits beyond whichdamage to the device mayoccur. DC and AC electrical specifications are not en­sured when operating the device at absolute maximum ratings.

DC ELECTRICAL CHARACTERISTICS –40°C≤TA≤+85°C, 4.5V ≤ VCC≤ 7.5V
(unless otherwise specified)

Parameter Test Conditions Min. Max. Unit

Standard Operating Voltage (V
Optional Operating Voltage (V
Power Supply Ripple
Operating Supply Current

Input Voltage Levels

CKI Input Levels

Crystal Input

Logic High (V
Logic Low (V

)

IH

)

IL

Schmitt Trigger Input

Logic High (VIH)
Logic Low (V

)

IL

RESET Input Levels

Logic High

Logic Low
SO Input Level (test mode)
All Other Inputs

Logic High

Logic High

Logic Low

Logic High

Logic Low

Input Capacitance
Hi-Z Input Leakage

Output Voltage Levels

LSTTL Operation

Logic High (V

OH

)

Logic Low (VOL)

CMOS Operation

Logic High

Logic Low

Note : 1. VCCvoltagechange must be less than 0.5V in a 1ms period to maintain proper operation.

CC

CC

)

Note 1

)

Peak to Peak
All Inputs and Outputs Open

Schmitt Trigger Input

V

= Max.

CC

With TTL trip level options
selected, V

CC

With high trip level options
selected

VCC=5V±5%
IOH=–20µA
IOL= 0.36mA

I

=–10µA

OH

IOL=+10µA

=5V±5%

4.5

4.5

2.2

– 0.3

0.7 V

CC

– 0.3

0.7 V

CC

– 0.3

2.2

3.0

2.2

– 0.3

3.6

– 0.3

–2

2.7

VCC–1

5.5

7.5

0.5
15

0.3

0.4

0.4

2.5

0.6

1.2

7

+2

0.4

0.2

V
V
V

mA

V
V

V
V

V
V
V

V
V
V
V

V
pF
µA

V

V

V

V

5/27

ETL9444/9445–ETL9344/9345

ETL934 4/L9345
DC ELECTRICAL CHARACTERISTICS (continued)

Parameter Test Conditions Min. Max. Unit

Output Current Levels

Output Sink Current

SO and SK Outputs (I

L

Outputs and Standard

0-L7

G

0-G3,D0-D3

G

and D0-D3Outputs with

0-G3

Outputs (IOL)

OL

)

High Current Options (IOL)
G

and D0-D3Outputs with

0-G3

Very High Current Options (IOL)
CKI (single-pin RC oscillator)

CKO

Output Source Current

Standard Configuration,
All Outputs (I

OH

)

Push-pull Configuration
SO and SK Outputs (I

LED Configuration, L

OH

0-L7

)

Outputs, Low Current
Driver Option (IOH)
LED Configuration, L

0-L7

Outputs, High Current
Driver Option (IOH)
TRI-STATE Configuration,
L

Outputs, Low

0-L7

Current Driver Option (I

OH

)
TRI-STATE Configuration,
L0-L7Outputs, High
Current Driver Option (I

OH

)

Input Load Source Current
CKO Output

RAM Power Supply Option
Power Requirement V

TRI-STATE Output Leakage
Current –5 +5

Total Sink Current Allowed

All Outputs Combined
D. G Ports
L

7-L4

L3-L

0

All Other Pins

Total Source Current Allowed

All I/O Combined
L

7-L4

L3-L

0

Each L Pin
All Other Pins

V

= 7.5V, VOL= 0.4V

CC

V

= 5.5V, VOL= 0.4V

CC

VCC= 4.5V, VOL= 0.4V
VCC= 7.5V, VOL= 0.4V
V

= 5.5V, VOL= 0.4V

CC

VCC= 4.5V, VOL= 0.4V
V

= 7.5V, VOL= 1.0V

CC

VCC= 5.5V, VOL= 1.0V
VCC= 4.5V, VOL= 1.0V
V

= 7.5V, VOL= 1.0V

CC

VCC= 5.5V, VOL= 1.0V
V

= 4.5V, VOL= 1.0V

CC

VCC= 4.5V, VIH= 3.5V
VCC= 4.5V, VOL= 0.4V

V

= 7.5V, VOH= 2.0V

CC

V

= 5.5V, VOH= 2.0V

CC

VCC= 4.5V, VOH= 2.0V
VCC= 7.5V, VOH= 3.75V
V

= 5.5V, VOH= 2.0V

CC

VCC= 4.5V, VOH= 1.0V
V

= 7.5V, VOH= 2.0V

CC

VCC= 6.0V, VOH= 2.0V
VCC= 5.5V, VOH= 2.0V
V

= 7.5V, VOH= 2.0V

CC

VCC= 6.0V, VOH= 2.0V
VCC= 5.5V, VOH= 2.0V
V

= 7.5V, VOH= 4.0V

CC

VCC= 5.5V, VOH= 2.7V
V

= 4.5V, VOH= 1.5V

CC

VCC= 7.5V, VOH= 4.0V
VCC= 5.5V, VOH= 2.7V
V

= 4.5V, VOH= 1.5V

CC

VCC= 5.0V, VIL=0V

= 3.3V 8.0

R

1.4

1.0

0.8

0.6

0.5

0.4
12

9

7
24
18
14

2

0.2

–100

–55
–28

– 0.85

– 1.1
– 1.2
– 1.4
– 1.4
– 0.7
– 2.7
– 2.7
– 1.4
– 0.7
– 0.6
– 0.9
– 1.4
– 1.2
– 1.8

–10

–900
–600
–350

–200

–27
–17
–15
–54
–34
–30

120
120

4
4

1.5

120

60
60
30

1.5

mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA

µA
µA
µA

mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA

µA

mA

µA

mA
mA
mA
mA
mA

mA
mA
mA
mA
mA

6/27

ETL9444/9445–ETL9344/9345

AC ELECTRICAL CHARACTERISTICS
ETL9444/L9445 : 0°C ≤ TA≤ +70°C, 4.5V ≤ VCC≤9.5V (unless otherwise specified)
ETL9344/L9345 : –40°C≤TA≤+85°C, 4.5V ≤ VCC≤7.5V (unless otherwise specified)

Parameter Test Conditions Min. Max. Unit

Instruction Cycle Time – t

c

CKI

Input Frequency – f

I

Duty Cycle
Rise Time
Fall Time

CKI Using RC (÷ 4)

Instruction Cycle Time

CKO as SYNC Input

t

SYNC

INPUTS :
IN

-IN0,G3-G0,L7-L

3

t

SETUP

t

HOL D

0

SI

t

SETUP

t

HOL D

OUTPUT PROPAGATION DELAY
SO, SK Outputs

t

pd1,tpd0

All Other Outputs

t

pd1,tpd0

÷ 32 Mode
÷ 16 Mode
÷ 8Mode
÷4Mode

f

= 2MHz

I

R = 56kΩ ± 5%
C=100pF±10%

Test Condition :
CL= 50pF, RL= 20kΩ,V

OUT

= 1.5V

16

0.8

0.4

0.2

0.1
30

16

400

40

2.0

1.0

0.5

0.25
60

120

80

28

8.0

1.3

2.0

1.0

4.0

5.6

µs

MHz
MHz
MHz
MHz

%
ns
ns

µs
ns

µs
µs

µs
µs

µs
µs

7/27

ETL9444/9445–ETL9344/9345

Figure 2 : Connection Diagrams.

Pin Description

L

7-L0

G

3-G0

D

3-D0

IN

-IN

3

SI Serial Input (or counter input)
SO Serial Output (or general purpose output)
SK Logic-controlled Clock (or general purpose output)

CKI System Oscillator Input

CKO System Oscillator Output (or general purpose input, RAM power supply, or SYNC input)

RESET System Reset Input

V

CC

GND Ground

8 Bidirectional I/O Ports with TRI-STATE
4 Bidirectional I/O Ports
4 General Purpose Outputs
4 General Purpose Inputs (COP444L only)

0

Power Supply

Figure 3 : Input/output Timing Diagrams (crystal divide-by-16 mode).

8/27

Figure 3a: Synchronization Timing.

ETL9444/9445–ETL9344/9345

FUN CTI ON AL DESCRIPTI ON

A blockdiagram ofthe ETL9444is given in figure 1.
Data pathsare illustratedinsimplified formto depict
how the various logic elements communicate with
eachotherin implementing the instructionsetof the
device. Positive logic is used. Whena bit is set,it is
a logic”1”(greater than 2volts).Whena bit isreset,
it is a logic ”0” (less than 0.8volts).

Allfunctional referencesto theETL9444/L9445 also
apply tothe ETL9344/L9345.

PROGRAM MEMORY
Program Memory consists ofa 2048 byteROM. As

can be seen by an examination of the
ETL9444/L9445 instructionset,thesewordsmaybe
programinstructions, programdataorROMaddres­singdata.Becauseof thespecialcharacteristics as­sociated with the JP, JSRP, JID, and LQID
instructions,ROMmust oftenbe thoughtofas being
organized into 32 pages of 64 wordseach.

ROM addressing isaccomplishedby a11-bit PCre­gister. Its binaryvalueselects oneof the 2048 8-bit
words contained in ROM. A newaddress is loaded
into the PC register during each instruction cycle.
Unlesstheinstruction isa transfer of controlinstruc­tion, thePC registeris loaded withthenext sequen­tial 11-bit binary count value. Three levels of
subroutine nesting are implemented by the 11-bit
subroutine save registers, SA, SB, and SC ; provi­ding a last-in, first-out (LIFO)hardware subroutine
stack.

ROM instruction words are fetched, decoded and
executed by the Instruction Decode, Control and
Skip Logiccircuitry.

DATA MEMORY
Data memoryconsistsof a 512-bit RAM,organized

as 8 data registers of 16 4-bit digits. RAM addres­sing is implemented by a 7-bit B register whose up­per 3 bits (Br) select1 of 8 data registers andlower
4 bits (Bd) select 1 of 16 4-bit digitsin theselected
dataregister.Whilethe4-bit contentsofthe selected

RAM digit (M) is usually loaded into or from, or ex­changed with, the A register (accumulator), it may
also be loaded into or fromthe Qlatches or loaded
fromthe L ports. RAM addressing may alsobe per­formeddirectlybythe LDDandXADinstructionsba­sed upon the 7-bit contents of the operand field of
these instructions. The Bd registeralso serves asa
source register for 4-bit data sent directly to the D
outputs.

INTERNALLOGIC
The 4-bit Aregister(accumulator) isthe source and

destination register for most I/O, arithmetic, logic
and datamemoryaccess operations. Itcan alsobe
usedto loadtheBr andBdportions oftheB register,
to load and input 4 bitsof the 8-bitQ latch data, to
input 4bitsof the8-bit L I/Oportdataandto perform
data exchanges with the SIO register.

A4-bitadderperforms thearithmetic andlogicfunc­tions,storing its results in A. It also outputs a carry
bitto the 1-bitC register, mostoftenemployed toin­dicate arithmetic overflow. The C register, in
conjunction with the XAS instruction and the ENre­gister, also serves to control the SK output. C can
be outputted directly to SK or can enableSK to be
a sync clockeach instructioncycle time. (See XAS
instruction andEN register description, below).

Four general-purpose inputs, IN3-IN0, are provided.
The D register provides 4 general-purpose outputs

and is used as the destination register for the 4-bit
contents of Bd. The D outputs can be directly
connectedtothe digitsofa multiplexed LED display.

The G register contents are outputs to 4 general­purpose bidirectional I/O ports. G I/O ports can be
directly connected tothe digits ofa multiplexedLED
display.

The Q register is an internal, latched, 8-bit register,
usedto hold data loaded to or fromM and A,aswell
as 8-bit data from ROM. Its contentsare output to
theL I/OportswhentheLdriversareenabledunder
program control(See LEIinstruction).

9/27