AT86RF231
Table 12-4.
Digital Interface Timing Characteristics (Continued)
12.4.15
t 13
BFBP IRQ latency
750
ns
12.4.17
12.4.18
t IRQ
f CLKM
Interrupt event latency
Clock frequency at pin 17 (CLKM)
Relative to the event to be indicated
Configurable in register 0x03
9
0
μs
MHz
Notes:
(TRX_CTRL_0)
1. Maximum pulse width less than (TX frame length + 16 μs)
1
2
4
8
16
250
62.5
MHz
MHz
MHz
MHz
MHz
kHz
kHz
2. For Fast SRAM read/write accesses on address space 0x82 - 0x94 the time t 5 (Min.) increases to 450 ns.
12.5
General RF Specifications
Test Conditions (unless otherwise stated):
V DD = 3.0V, f RF = 2.45 GHz, T OP = 25°C, Measurement setup see Figure 5-1 on page 12 .
Table 12-5.
General RF Specifications
No.
12.5.1
12.5.2
12.5.3
12.5.4
Symbol
f RF
f CH
f HDR
f PSDU
Parameter
Frequency range
Channel spacing
Header bit rate (SHR, PHR)
PSDU bit rate
Condition
As specified in [1] , [2]
As specified in [1] , [2]
As specified in [1] , [2]
As specified in [1] , [2]
Min.
2405
Typ.
5
250
250
Max
2480
Units
MHz
MHz
kb/s
kb/s
OQPSK_DATA_RATE = 1
OQPSK_DATA_RATE = 2
OQPSK_DATA_RATE = 3
500
1000
2000
kb/s
kb/s
kb/s
12.5.5
12.5.6
f CHIP
f CLK
Chip rate
Crystal oscillator frequency
As specified in [1], [2]
Reference oscillator
2000
16
kchip/s
MHz
12.5.7
t XTAL
Reference oscillator settling time
Leaving SLEEP state to clock
330
1000
μs
available at pin 17 (CLKM)
12.5.8
12.5.9
B 20dB
Symbol rate deviation
Reference frequency accuracy for
correct functionality
20 dB bandwidth
PSDU bit rate 250 kb/s
PSDU bit rate 500 kb/s
PSDU bit rate 1000 kb/s
PSDU bit rate 2000 kb/s
-60 (1)
-40
-40
-30
2.8
+60
+40
+40
+30
ppm
ppm
ppm
ppm
MHz
Note:
1. A reference frequency accuracy of ±40 ppm is required by [1] , [2] .
158
8111C–MCU Wireless–09/09
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