MAX7314ATG-T Maxim Integrated Products, MAX7314ATG-T Datasheet - Page 11

• Manufacturer Part Number: MAX7314ATG-T
• Description: Communication ICs - Various
• Manufacturer: Maxim Integrated Products
• Type: Hot Insertion Protectionr

Specifications of MAX7314ATG-T

• Mounting Style: SMD/SMT
• Operating Supply Voltage: 2.5 V, 3.3 V
• Supply Type: Analog
• Package / Case: TQFN-24 EP
• Data Rate: 400 Kbps
• Supply Voltage (max): 3.6 V
• Supply Voltage (min): 2 V
• Supply Current: 0.057 mA
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Table 2. Register Address Map
The reset input RST is an active-low input. When taken
low, RST clears any transaction to or from the MAX7314
on the serial interface and configures the internal regis-
ters to the same state as a power-up reset (Table 3),
which resets all ports as inputs. The MAX7314 then
waits for a START condition on the serial interface.
On power-up, and whenever the RST input is pulled
low, all control registers are reset and the MAX7314
enters standby mode (Table 3). Power-up status makes
all ports into inputs and disables both the PWM oscilla-
tor and blink functionality. RST can be used as a hard-
ware shutdown input, which effectively turns off any
LED (or other) loads and puts the device into its lowest
power condition.
Blink phase 0 outputs P15–P8
Blink phase 1 outputs P15–P8
Blink phase 0 outputs P7–P0
Blink phase 1 outputs P7–P0
Ports configuration P15–P8
Outputs intensity P11, P10
Outputs intensity P13, P12
Outputs intensity P15, P14
Ports configuration P7–P0
Read input ports P15–P8
Outputs intensity P1, P0
Outputs intensity P3, P2
Outputs intensity P5, P4
Outputs intensity P7, P6
Outputs intensity P9, P8
Read input ports P7–P0
Master, O16 intensity
Configuration
REGISTER
18-Port GPIO with LED Intensity Control,
______________________________________________________________________________________
Interrupt, and Hot-Insertion Protection
Detailed Description
Initial Power-Up
Device Reset
ADDRESS CODE
(hex)
0x0A
0x0B
0x00
0x01
0x02
0x03
0x06
0x07
0x0E
0x0F
0x10
0x11
0x12
0x13
0x14
0x15
0x16
0x17
The configuration register is used to configure the PWM
intensity mode, interrupt, and blink behavior, operate
the INT/O16 output, and read back the interrupt status
(Table 4).
The 16 I/O ports P0 through P15 can be configured to
any combination of inputs and outputs using the ports
configuration registers (Table 5). The INT/O16 output
can also be configured as an extra general-purpose
output, and the BLINK input can be configured as an
extra general-purpose input using the configuration
register (Table 4).
The input ports registers are read only (Table 6). They
reflect the incoming logic levels of the ports, regardless of
whether the port is defined as an input or an output by the
ports configuration registers. Reading an input ports reg-
ister latches the current-input logic level of the affected
eight ports. A write to an input ports register is ignored.
Configuration Register
AUTOINCREMENT
0x0E (no change)
0x0F (no change)
Ports Configuration
ADDRESS
0x01
0x00
0x03
0x02
0x07
0x06
0x0B
0x0A
0x11
0x12
0x13
0x14
0x15
0x16
0x17
0x10
Input Ports
11