ST STMPE801 User Manual

Features

■ 8 GPIO

■ Operating voltage 1.65V - 3.6V

■ I/O voltage 1.65V-3.6V

■ Interrupt output pin

■ Reset input pin

■ Wake up feature on each I/O

■ Up to 2 devices sharing the same bus

(1 address line)

■ <1µA suspend current

STMPE801

8-bit port expander

Xpander logic

QFN16L

Application

■ Portable media player, Game console

■ Mobile phone, Smart phone

Table 1. Device summary

SO-16

Description

The STMPE801 is a GPIO (General Purpose
Input / Output) port expander able to interface a
main digital ASIC via the two-line bidirectional bus

2

(I

C); separate GPIO Expander IC is often used in
Mobile-Multimedia platforms to solve the
problems of the limited amounts of GPIOs usually
available on the Digital Engine.

The STMPE801 offers great flexibility as each
I/Os is configurable as input, output. This device
has been designed very low quiescent current,
and includes wake up feature for each I/O, to
optimize the power consumption of the IC.

Order codes Package Packaging

STMPE801QTR QFN16L (2.6mm x 1.8mm) Tape and reel (3000 per reel)

STMPE801MTR SO-16 Tape and reel (2500 per reel)

July 2007 Rev 4 1/26

www.st.com

26

Contents STMPE801

Contents

1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

2 Pin settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Pin connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.2 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

3 Maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.1 Absolute maximum rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3.2 Thermal data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Electrical specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

4.1 DC electrical characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

5 I2C module . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.1 I2C address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5.2 I2C features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

5.3 Start condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.4 Stop condition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.5 Acknowledge bit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.6 Data input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.7 Operation modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

5.8 Read operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.9 Acknowledgement in read operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.10 Write operations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.11 General call . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6 Turning I2C block OFF and ON . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2/26

STMPE801 Contents

7 Register map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.1 System and identification registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

7.2 System control register . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

8 Interrupt, power supply & reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

8.1 Interrupt enable GPIO mask register (IEGPIOR) . . . . . . . . . . . . . . . . . . . 16

8.2 Interrupt status GPIO register (ISGPIOR) . . . . . . . . . . . . . . . . . . . . . . . . 17

8.3 GPIO controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

8.4 Power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

8.5 Reset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

9 Package mechanical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

10 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

3/26

Block diagram STMPE801

1 Block diagram

Figure 1. Block diagram

4/26

STMPE801 Pin settings

2 Pin settings

2.1 Pin connection

Figure 2. Pin connection

QFN16L

1

1

2

2

3

3

4

4

Top View

Top View

5

5

6

6

7

7

8

8

16

16

15

15

14

14

13

13

12

12

11

11

10

10

9

9

SO-16

5/26

Pin settings STMPE801

2.2 Pin assignment

Table 2. Pin assignment

Pin N°

SO-16 QFN16L

11 1 INT INT output

12 2 Reset Reset Input (Active Low)

13 3 CLOCK

14 4 Address

Name Function

2

C Clock

I

2

C Address

I

15 5 DATA

16 6 VCC

I2C Data

Supply voltage for I

2

C block

1 7 VIO Supply voltage for GPO and GPIO Controller

(Note: V

must be ≥ VCC)

IO

2 8 GND GND

3 9 GPIO_0 GPIO 0

4 10 GPIO_1 GPIO 1

5 11 GPIO_2 GPIO 2

6 12 GPIO_3 GPIO 3

7 13 GPIO_4 GPIO 4

8 14 GPIO_5 GPIO 5

9 15 GPIO_6 GPIO 6

10 16 GPIO_7 GPIO 7

6/26

STMPE801 Maximum rating

3 Maximum rating

Stressing the device above the rating listed in the “Absolute Maximum Ratings” table may
cause permanent damage to the device. These are stress ratings only and operation of the
device at these or any other conditions above those indicated in the Operating sections of
this specification is not implied. Exposure to Absolute Maximum Rating conditions for
extended periods may affect device reliability. Refer also to the STMicroelectronics SURE
Program and other relevant quality documents.

3.1 Absolute maximum rating

Table 3. Absolute maximum rating

Symbol Parameter Value Unit

V

CC

V

IO

VESD (HBM) ESD protection on each GPO pin 2 KV

Supply voltage 4.5 V

GPO supply voltage 4.5 V

3.2 Thermal data

Table 4. Thermal data

Symbol Parameter

Operating ambient temperature -40 +85 °C

Operating storage temperature -65 155 °C/W

T

T

A

STG

Val ue

Unit

Min Typ Max

7/26

Electrical specification STMPE801

4 Electrical specification

4.1 DC electrical characteristics

Table 5. DC electrical characteristics

Symbol Parameter Test conditions

Min Typ Max

V

Core supply voltage 1.65 - 3.6 V

CC

V

IO supplì voltage 1.65 - 3.6 V

IO

Ipd Power down current 1 µA

Icc Max

Icc

Normal

I

CC

Suspend

V

IL

V

IH

V

OL

VOH

Operating current
(No peripheral activity)

Operating current
(No peripheral activity)

Operating current
(No peripheral activity)

Input voltage low state

Input voltage high state

Output voltage low state

Output voltage high
state

2

I

C running at 400KHz

100% traffic density

2

C running at 400KHz

I
1% traffic density

2

C activity

No I

= 1.8-3.3V

V

IO

= 1.8-3.3V 0.70V

V

IO

= 1.8-3.3V, IOL=8mA

V

IO

-0.3V

-0.3V

VIO=1.8-3.3V, IOL=8mA 0.75VIO V

Value

0.2 0.5 mA

10 15 µA

0.5 1 µA

0.30V

IO

IO

VIO+0.3V

0.25V

IO

+0.3V

IO

Unit

V

V

V

V

VOL (I2C)

V

OH

2

(I

C)

Output voltage low state

Output voltage high
state

Vcc=1.8-3.3V, I

Vcc=1.8-3.3V, I

=8mA

OL

=8mA

OL

-0.3V

0.75Vc
c

0.25V

CC

VCC+0.3V

V

V

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