AT86RF232
7.1.4.6 State Transition Timing Summary
The Atmel AT86RF232 transition numbers correspond to Figure 7-1 and do not include
SPI access time unless otherwise stated. See measurement setup in Figure 5-1 .
Table 7-1. State Transition Timing.
Symbol
t TR1
Parameter
P_ON ? CLKM is available
Condition
Depends on crystal oscillator
Min.
Typ.
330
Max.
1000
Unit
μs
setup (C L = 10pF) and external
capacitor at DVDD (100nF nom.).
t TR1a
SLEEP ? CLKM is available
Depends on crystal oscillator
180
1000
μs
setup (C L = 10pF) and external
capacitor at DVDD (100nF nom.).
t TR2
SLEEP ? TRX_OFF
Depends on crystal oscillator
210
1000
μs
setup (C L = 10pF) and external
capacitor at DVDD (100nF nom.).
t TR3
TRX_OFF ? SLEEP
For f CLKM > 62.5kHz.
35
CLKM
cycles
Otherwise.
0
CLKM
cycles
t TR4
TRX_OFF ? PLL_ON
Depends on external capacitor at
80
μs
AVDD (100nF nom.).
t TR5
PLL_ON ? TRX_OFF
1
μs
t TR6
TRX_OFF ? RX_ON
Depends on external capacitor at
80
μs
AVDD (100nF nom.).
t TR7
t TR8
RX_ON ? TRX_OFF
PLL_ON ? RX_ON
1
1
μs
μs
t TR9
RX_ON ? PLL_ON
Transition time is also valid for
1
μs
TX_ARET_ON, RX_AACK_ON.
t TR10
PLL_ON ? BUSY_TX
When asserting pin 11 (SLP_TR)
16
μs
or TRX_CMD = TX_START first
symbol transmission is delayed by
one symbol period (PLL settling
and PA ramp-up).
t TR11
t TR12
BUSY_TX ? PLL_ON
Various states ? TRX_OFF
PLL settling time.
Using TRX_CMD =
32
1
μs
μs
FORCE_TRX_OFF; not valid for
SLEEP.
t TR13
t TR14
RESET ? TRX_OFF
Various states ? PLL_ON
Not valid for P_ON or SLEEP.
Using TRX_CMD =
26
1
μs
μs
FORCE_PLL_ON; not valid for
P_ON, SLEEP, or RESET.
t TR15
P_ON ? TRX_OFF
Using TRX_CMD = TRX_OFF
360
1000
μs
directly after CLKM is available.
The state transition timing is calculated based on the timing of the individual blocks
shown in Figure 7-3 to Figure 7-7 . The worst case values include maximum operating
temperature, minimum supply voltage, and device parameter variations.
39
8321A – MCU Wireless – 10/11
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