MAX7032ATJ+ Maxim Integrated Products, MAX7032ATJ+ Datasheet - Page 20

• Manufacturer Part Number: MAX7032ATJ+
• Description: RF Transceiver IC TXRX ASK/FSK PROG MHz Crystal-Based, P
• Manufacturer: Maxim Integrated Products

Specifications of MAX7032ATJ+

• Number Of Receivers: 1
• Number Of Transmitters: 1
• Wireless Frequency: 300 MHz to 450 MHz
• Output Power: 6.7 dBm
• Operating Supply Voltage: 2.7 V, 5 V
• Maximum Operating Temperature: + 125C
• Mounting Style: SMD/SMT
• Maximum Supply Current: 12.5 mA
• Minimum Operating Temperature: - 40 C
• Modulation: ASK/OOK.FSK
• Package / Case: TQFN-32 EP
• Data Rate: 33Kbps
• Supply Voltage Range: 2.1V To 3.6V, 4.5V To 5.5V
• Logic Case Style: QFN
• No. Of Pins: 32
• Operating Temperature Range: -40°C To +125°C
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Data Rate Max: 66Kbps
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Low-Cost, Crystal-Based, Programmable,
ASK/FSK Transceiver with Fractional-N PLL
DIO is selected as an output of the MAX7032 for the fol-
lowing CS cycle whenever a READ command is
received. The CPU must tri-state the DIO line on the
cycle of CS that follows a read command, so the
MAX7032 can drive the data output line. Figure 9
shows the diagram of the 3-wire interface. Note that the
user can choose to send either 16 cycles of SLCK or
just eight cycles as all the registers are 8-bits wide. The
Figure 8. Data Input Diagram
Figure 9. Read Command on a 3-Wire Serial Interface
20
SCLK
SCLK
SCLK
DIO
DIO
DIO
CS
CS
______________________________________________________________________________________
CS
COMMAND
COMMAND
1
1
READ
READ
0
0
A5
A5
COMMAND
A4
A4
C1
ADDRESS
A3
A3
ADDRESS
C0
A2
A2
A5
A1
A1
A0
A0
A4
0
0
ADDRESS
A3
0
0
A2
0
0
0
DATA
DATA
0
A1
0
0
A0
0
0
user must drive DIO low at the end of the read
sequence.
The MASTER RESET command (0x3) (see Table 2)
sends a reset signal to all the internal registers of the
MAX7032 just like a power-off and power-on sequence
would do. The reset signal remains active for as long as
CS is high after the command is sent.
D7
0
0
0
0
D6
R7
R7
D5
R6
R6
D4
DATA
R5
R5
8 BITS OF DATA
REGISTER DATA
REGISTER DATA
D3
R4
R4
16 BITS OF DATA
R3
R3
D2
R2
R2
D1
R1
R1
A3
D0
R0
R7
REGISTER
DATA
R0