MAX7328 Maxim, MAX7328 Datasheet - Page 4

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

I
Figure 1. Block Diagram
4
2
4–7, 9–12
1, 2, 3
_______________________________________________________________________________________
C Port Expanders with Eight I/O Ports
SO
13
14
15
16
—
8
SHIFT REGISTER
SHIFT REGISTER
WRITE PULSE
READ PULSE
DATA FROM
POWER-ON
PIN
DATA TO
SSOP/TSSOP
10, 11, 12, 14,
16, 17, 19, 20
RESET
3, 8, 13, 18
6, 7, 9
15
1
2
4
5
AD0, AD1,
NAME
P0–P7
D
CLK
GND
AD2
SCL
SDA
N.C.
INT
V+
FF
S
Q
Address Inputs. AD0, AD1, and AD2 set device slave address. Connect AD0, AD1,
and AD2 to either GND or V+. See Tables 1 and 2.
Input/Output Ports. P0–P7 are open-drain I/Os.
Ground
Interrupt Output. INT is an open-drain output rated at 5.5V.
I
I
Positive Supply Voltage. Bypass V+ to GND with a 0.047µF ceramic capacitor.
No Connection. Internally not connected.
2
2
C-Compatible Serial-Clock Input
C-Compatible Serial-Data I/O
D
CLK
FF
S
Q
100µA
FUNCTION
MAX7328
MAX7329
V+
GND
TO INTERRUPT
LOGIC
Pin Description
P0–P7