MAX7300AAI-T Maxim Integrated, MAX7300AAI-T Datasheet

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MAX7300AAI-T

Manufacturer Part Number
MAX7300AAI-T
Description
Interface - I/O Expanders 2.5-5.5V 20/28 Port I/O Expander
Manufacturer
Maxim Integrated
Series
MAX7300r
Datasheet

Specifications of MAX7300AAI-T

Operating Supply Voltage
2.5 V to 5.5 V
Operating Temperature Range
- 40 C to + 125 C
Mounting Style
SMD/SMT
Package / Case
SSOP-28
Output Current
10 mA
Power Dissipation
727 mW
The MAX7300 compact, serial-interfaced, I/O expan-
sion peripheral provides microprocessors with up to 28
ports. Each port is individually user configurable to
either a logic input or logic output.
Each port can be configured as either a push-pull logic
output capable of sinking 10mA and sourcing 4.5mA, or a
Schmitt logic input with optional internal pullup. Seven
ports feature configurable transition detection logic, which
generates an interrupt upon change of port logic level.
The MAX7300 is controlled through an I
wire serial interface, and uses four-level logic to allow 16
I
The MAX7300AAX and MAX7300ATL have 28 ports and
are available in 36-pin SSOP and 40-pin TQFN pack-
ages, respectively. The MAX7300AAI and MAX7300ATI
have 20 ports and are available in 28-pin SSOP and
TQFN packages. For an SPI-interfaced version, refer to
the MAX7301 data sheet. For a pin-compatible port
expander with additional 24mA constant-current LED
drive capability, refer to the MAX6956 data sheet.
19-2413; Rev 7; 9/11
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
2
C addresses from only two select pins.
Pin Configurations continued at end of data sheet.
TOP VIEW
White Goods
Automotive
2-Wire-Interfaced, 2.5V to 5.5V, 20-Port or
GND
GND
ISET
AD0
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
________________________________________________________________ Maxim Integrated Products
10
11
12
13
14
1
2
3
4
5
6
7
8
9
General Description
28 SSOP
MAX7300
Pin Configurations
Industrial Controllers
System Monitoring
Applications
28
27
26
25
24
23
22
21
20
19
18
17
16
15
2
V+
AD1
SCL
SDA
P31
P30
P29
P28
P27
P26
P25
P24
P23
P22
C-compatible 2-
o 400kbps I
o 2.5V to 5.5V Operation
o -40°C to +125°C Temperature Range
o 20 or 28 I/O Ports, Each Configurable as
o 11µA (max) Shutdown Current
o Logic Transition Detection for Seven I/O Ports
* EP = Exposed pad.
Devices are also available in a lead(Pb)-free/RoHS-compliant pack-
age. Specify lead-free by adding "+" to the part number when order-
ing. Devices are also available in tape-and-reel packaging. Specify
tape and reel by adding "T" to the part number when ordering.
MAX7300AAI
MAX7300ATI
MAX7300AAX
MAX7300ATL
28-Port I/O Expander
Push-Pull Logic Output
Schmitt Logic Input
Schmitt Logic Input with Internal Pullup
PART
47nF
39kΩ
CLOCK
DATA
3V
2
C-Compatible Serial Interface
Typical Operating Circuit
36
35
33
34
31
29
27
25
24
23
22
21
1
3
2
4
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
-40°C to +125°C
TEMP RANGE
Ordering Information
ISET
V+
GND
GND
AD1
AD0
SDA
SCL
P31
P30
P29
P28
P27
P26
P25
P24
MAX7300AAX
P10
P11
P12
P13
P14
P15
P16
P17
P18
P19
P20
P21
P22
P23
P4
P5
P6
P7
P8
P9
PIN-PACKAGE
28 SSOP
28 TQFN-EP*
36 SSOP
40 TQFN-EP*
32
30
28
26
5
7
9
11
6
8
10
12
13
14
15
16
17
18
19
20
Features
I/O 4
I/O 5
I/O 6
I/O 7
I/O 8
I/O 9
I/O 10
I/O 11
I/O 12
I/O 13
I/O 14
I/O 15
I/O 16
I/O 17
I/O 18
I/O 19
I/O 20
I/O 21
I/O 22
I/O 23
I/O 24
I/O 25
I/O 26
I/O 27
I/O 28
I/O 29
I/O 30
I/O 31
1

Related parts for MAX7300AAI-T

MAX7300AAI-T Summary of contents

Page 1

... C addresses from only two select pins. The MAX7300AAX and MAX7300ATL have 28 ports and are available in 36-pin SSOP and 40-pin TQFN pack- ages, respectively. The MAX7300AAI and MAX7300ATI have 20 ports and are available in 28-pin SSOP and TQFN packages. For an SPI-interfaced version, refer to the MAX7301 data sheet ...

Page 2

I/O Expander ABSOLUTE MAXIMUM RATINGS Voltage (with respect to GND) V+ .............................................................................-0.3V to +6V SCL, SDA, AD0, AD1................................................-0.3V to +6V All Other Pins................................................-0.3V to (V+ + 0.3V) P4–P31 Current ................................................................±30mA GND Current .....................................................................800mA ...

Page 3

ELECTRICAL CHARACTERISTICS (continued) ( Typical Operating Circuit , V = 2.5V to 5.5V PARAMETER SYMBOL Output High Voltage Port Sink Current Output Short-Circuit Current Input High-Voltage SDA, SCL, AD0, AD1 Input Low-Voltage ...

Page 4

I/O Expander TIMING CHARACTERISTICS (Figure 2) (continued 2.5V to 5.5V unless otherwise noted.) (Note MIN MAX Note 1: All parameters tested at ...

Page 5

T = +25°C, unless otherwise noted.) ISET A GPO SINK CURRENT vs. TEMPERATURE 2.5V TO 5.5V -40.0 -12.5 ...

Page 6

... The 36-pin MAX7300AAX and 40-pin MAX7300ATL have 28 ports P31. The 28-pin MAX7300ANI, MAX7300AAI, and MAX7300ATI have only 20 ports avail- able, P12 to P31. The eight unused ports should be configured as outputs on power-up by writing 0x55 to 6 ...

Page 7

Table 1. Port Configuration Map REGISTER Port Configuration for P7, P6, P5, P4 Port Configuration for P11, P10, P9, P8 Port Configuration for P15, P14, P13, P12 Port Configuration for P19, P18, P17, P16 ...

Page 8

I/O Expander GPIO P4 TO P31 GPIO DATA 8 AD0 ADDRESS MATCHER AD1 7-BIT DEVICE ADDRESS SDA SLAVE ADDRESS BYTE SCL Figure 1. MAX7300 Functional Diagram MAX7300 is the recipient. ...

Page 9

SDA t SU, DAT t LOW SCL t HIGH t HD, STA t R START CONDITION Figure 2. 2-Wire Serial Interface Timing Details SDA S SCL START CONDITION Figure 3. Start and Stop Conditions ...

Page 10

I/O Expander START CONDITION SCL SDA BY TRANSMITTER S SDA BY RECEIVER Figure 5. Acknowledge SDA 1 0 MSB SCL Figure 6. Slave Address Operation with Multiple Masters If the MAX7300 is operated ...

Page 11

COMMAND BYTE IS STORED ON RECEIPT OF STOP CONDITION ACKNOWLEDGE FROM MAX7300 S Figure 7. Command Byte Received HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX7300’s REGISTER ACKNOWLEDGE FROM MAX7300 S SLAVE ADDRESS ...

Page 12

I/O Expander HOW COMMAND BYTE AND DATA BYTE MAP INTO MAX7300’s REGISTER ACKNOWLEDGE FROM MAX7300 SLAVE ADDRESS S Figure 9. ‘n’ Data Bytes Received Table 3. MAX7300 Address Map PIN CONNECTION AD1 AD0 ...

Page 13

Table 5. Register Address Map REGISTER No-Op Configuration Transition Detect Mask Factory Reserved; do not write to this port Port Configuration P7, P6, P5, P4 Port Configuration P11, P10, P9, P8 Port Configuration P15, ...

Page 14

I/O Expander Table 5. Register Address Map (continued) REGISTER Port 26 only (data bit D0. D7-D1 read as 0) Port 27 only (data bit D0. D7-D1 read as 0) Port 28 only (data ...

Page 15

Table 6. Power-Up Configuration REGISTER POWER-UP CONDITION FUNCTION Port Register GPIO Output Low Bits Configuration Shutdown Enabled Register Transition Detection Disabled Input Mask All Clear (Masked Off) Register Port P7, P6, ...

Page 16

I/O Expander Table 7. Configuration Register Format ADDRESS CODE FUNCTION (HEX) Configuration Register 0x04 Table 8. Shutdown Control (S Data Bit D0) Format ADDRESS CODE FUNCTION (HEX) Shutdown 0x04 Normal Operation 0x04 Table ...

Page 17

P31 GPIO INPUT CONDITIONING P30 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P29 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P28 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P27 GPIO/PORT OUTPUT LATCH GPIO INPUT CONDITIONING P26 GPIO/PORT ...

Page 18

I/O Expander TOP VIEW ISET 1 GND 2 GND 3 AD0 MAX7300 P12 P13 8 P10 9 P14 10 P11 11 P15 12 P16 13 P17 14 ...

Page 19

Chip Information PROCESS: CMOS ______________________________________________________________________________________ 28-Port I/O Expander Package Information For the latest package outline information and land patterns (footprints www.maxim-ic.com/packages. Note that a “+”, “#”, or “-” in the package code ...

Page 20

... Maxim reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. 20 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2011 Maxim Integrated Products DESCRIPTION Maxim is a registered trademark of Maxim Integrated Products, Inc ...

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