MAX7301AAI+ Maxim Integrated Products, MAX7301AAI+ Datasheet - Page 12

• Manufacturer Part Number: MAX7301AAI+
• Description: IC, I/O EXPANDER, 26MHZ, SSOP-28
• Manufacturer: Maxim Integrated Products

Specifications of MAX7301AAI+

• Bus Frequency: 26MHz
• No. Of I/o's: 28
• Supply Voltage Range: 2.5V To 5.5V
• Digital Ic Case Style: SSOP
• No. Of Pins: 28
• Peak Reflow Compatible (260 C): Yes
• Ic Function: I/O Expander
• Termination Type: SMD
• Operating Temperature Range: -40°C To +125°C
• Rohs Compliant: Yes
• Filter Terminals: SMD
• Leaded Process Compatible: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

4-Wire-Interfaced, 2.5V to 5.5V, 20-Port and
28-Port I/O Expander
12
Figure 5. Maskable GPIO Ports P24 Through P31
______________________________________________________________________________________
P29
P26
P25
P30
P28
P27
P24
P31
GPIO/PORT OUTPUT LATCH
GPIO/PORT OUTPUT LATCH
GPIO/PORT OUTPUT LATCH
GPIO/PORT OUTPUT LATCH
GPIO/PORT OUTPUT LATCH
GPIO/PORT OUTPUT LATCH
GPIO/PORT OUTPUT LATCH
CONDITIONING
CONDITIONING
CONDITIONING
CONDITIONING
CONDITIONING
CONDITIONING
CONDITIONING
GPIO INPUT
GPIO INPUT
GPIO INPUT
GPIO INPUT
GPIO INPUT
GPIO INPUT
GPIO INPUT
CONFIGURATION REGISTER M BIT = SET
CONDITIONING
GPIO INPUT
OUTPUT LATCH
OUTPUT LATCH
GPIO/PORT
INT
GPIO/PORT OUT
GPIO/PORT OUT
GPIO/PORT OUT
GPIO/PORT OUT
GPIO/PORT OUT
GPIO/PORT OUT
GPIO/PORT OUT
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
GPIO IN
R
S
CLOCK PULSE WHEN WRITING CONFIGURATION REGISTER WITH M BIT SET
D
D
D
D
D
D
D
Q
Q
Q
Q
Q
Q
Q
MASK REGISTER BIT 6
MASK REGISTER BIT 5
MASK REGISTER BIT 4
MASK REGISTER BIT 3
MASK REGISTER BIT 2
MASK REGISTER BIT 1
GPIO/PORT OUT
CLOCK PULSE AFTER EACH READ ACCESS TO MASK REGISTER
GPIO IN
MASK REGISTER LSB
OR