MAX7328 Maxim, MAX7328 Datasheet - Page 10

• Manufacturer Part Number: MAX7328
• Description: The MAX7328/MAX7329 are 2-wire serial-interfaced peripherals with eight I/O ports
• Manufacturer: Maxim

I
10
Figure 10. Writing to the MAX7328/MAX7329
2
INTERNAL WRITE
MAX7319
MAX7320
MAX7321
MAX7322
MAX7323
MAX7328
MAX7329
C Port Expanders with Eight I/O Ports
______________________________________________________________________________________
PART
FROM PORT
Pin Configurations (continued)
TOP VIEW
DATA OUT
TO PORT
SCL
SDA
N.C.
SDA
N.C.
SCL
START CONDITION
INT
V+
A0
A1
A2
P0
S
I
2
10
1
2
3
4
5
6
7
8
9
C BUS RST
1
+
TSSOP/SSOP
Yes
Yes
Yes
Yes
Yes
2
—
—
MAX7328
MAX7329
SLAVE ADDRESS
3
4
5
6
20
19
18
17
16
15
14
13
12
11
INPUTS
Up to 8
Up to 4
Up to 8
Up to 8
P7
P6
N.C.
P5
P4
GND
P3
N.C.
P2
P1
7
—
8
4
R/W ACKNOWLEDGE
0
8
A
FROM SLAVE
INTERRUPT
LATCHING
DATA TO PORT
Yes
Yes
Yes
Yes
Yes
—
—
DATA 1
OPEN-DRAIN
t
PV
OUTPUTS
Up to 8
Up to 4
Up to 8
Up to 8
—
—
—
A
ACKNOWLEDGE
FROM SLAVE
DATA TO PORT
PUSH-PULL
DATA 1 VALID
OUTPUTS
DATA 2
—
—
—
—
8
4
4
Selector Guide
t
PV
SECOND SOURCE
A
ACKNOWLEDGE
FROM SLAVE
PCF8574A
DATA 2 VALID
PCF8574
—
—
—
—
—