Rainbow Electronics AT88RF1354 - Manual (Page 19)

13.56 MHz Type B RF Reader
19
8547A −RFID−10/08
Figure 5. SPI Interface timing requirements
Standby Mode Timing
Tc = -40° to +85° C (unless otherwise noted) (1)
V
CC
= 3.0 to 3.6 V V
CC
= 4.5 to 5.5 V
Symbol Parameter Condition
Min Typical Max Min Typical Max
Units
t
OSC
Crystal Oscillator start-up time Leaving OSC disabled Standby (3) uS
Entering OSC enabled Standby (2) uS
t
SDBY
Standby Mode Enable Time
Entering OSC disabled Standby (3) uS
Leaving OSC enabled Standby (2) uS
t
WAKE
Exit Standby Mode Time
Leaving OSC disabled Standby (3) uS
Leaving CLKO disabled Standby (4) uS
Leaving CLKO, PLL disabled Standby (5) uS
t
CLKO
CLKO start-up time
Leaving CLKO, PLL, OSC disabled Standby (6) uS
Note: 1. Typical values at 25° C. Maximum values are characterized values and not test limits in production.
2. OSC enabled Standby mode: PLL Register bit SL0 = 0 b.
3. OSC disabled Standby mode: PLL Register bit SL0 = 1 b.
4. CLKO disabled Standby mode: PLL Register bit ENB = 1 b.
5. CLKO disabled and PLL disabled Standby mode: PLL Register bits ENB = 1 b and SL0 = 1 b.
6. CLKO disabled, PLL disabled, and OSC disabled Standby mode: PLL Register bits ENB = 1 b
and SL0 = 1 b and SL1 = 1 b.
All values are preliminary and will be updated after characterization.