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MICRF219A Datasheet(PDF) 16 Page - Micrel Semiconductor

Part # MICRF219A
Description  300MHz to 450MHz ASK/OOK Receiver with Auto-Poll, and RSSI
PDF  25 Pages
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Manufacturer  MICREL [Micrel Semiconductor]
Direct Link  http://www.micrel.com
Logo MICREL - Micrel Semiconductor

MICRF219A Datasheet(HTML) 16 Page - Micrel Semiconductor

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Micrel, Inc.
MICRF219A
August 12, 2015
16
Revision 3.0
RadioTech@micrel.com or (408) 944-0800
Auto-Poll Programming Example
RF frequency 433.92MHz, bit rate 1kbps, bit width 1ms.
D[19] = 0, AGC fast attack enabled
D[18] = 1, watchdog timer is OFF
D[17] = 0,
D[16] = 0
D[15] = 1, device is placed in autopoll
D[14:12] = 100, sleep time 160ms
D[11:9] = 011, bit check window time 457
μs with D[4:3]
= 00
D[8:7] = 10, number of consecutive valid bits is 8
D[6:5] = 11, slice level 50%
D[4:3] = 00, demodulator bandwidth = 1.625kHz
D[2:0] = 000
From MSB to LSB, see Table 5:
D19
D18
D17
D16
D15
D14
D13
D12
0
1
0
0
1
1
0
0
D11
D10
D9
D8
D7
D6
D5
0
1
1
1
0
1
1
D4
D3
D2
D1
D0
0
0
0
0
0
Table 5. Auto-Poll example bit sequence.
Figure 12. Auto-Poll Example
As noted in the Absolute Maximum Ratings section, the
voltage on SCLK can go up to VDD + 0.3V without
causing damage. But applying VDD + 0.3V to SCLK can
put the part in an unknown test mode. If this accidently
happens, cycle the power supply to restore the part to
normal operation.



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