CC2560A_16 Datasheet, PDF (14/51 Pages) Texas Instruments – Dual-Mode Bluetooth Controller

CC2560A NRND; CC2564 NRND
CC2560A, CC2560B, CC2564, CC2564B
SWRS121E – JULY 2012 – REVISED JANUARY 2016
www.ti.com
5.7.1.5 nSHUTD Requirements
Operation mode level ⁽¹⁾
Shutdown mode level ⁽¹⁾
PARAMETER
Minimum time for nSHUT_DOWN low to reset the device
SYM
V_IH
V_IL
Rise and fall times
t_r and t_f
(1) An internal pulldown retains shut-down mode when no external signal is applied to this pin.
MIN
1.42
0
5
MAX
1.98
0.4
20
UNIT
V
V
ms
μs
5.7.2 Clock Specifications
5.7.2.1 Slow Clock Requirements
An external source must supply the slow clock and connect to the SLOW_CLK_IN pin (for example, the
host or external crystal oscillator). The source must be a digital signal in the range of 0 to 1.8 V. The
accuracy of the slow clock frequency must be 32.768 kHz ±250 ppm for Bluetooth use (as specified in the
Bluetooth specification). The external slow clock must be stable within 64 slow-clock cycles (2 ms)
following the release of nSHUTD.
space
CHARACTERISTICS
Input slow clock frequency
Input slow clock accuracy
(Initial + temp + aging)
Input transition time t_r and t_f
(10% to 90%)
Frequency input duty cycle
Slow clock input voltage limits
Input impedance
Input capacitance
CONDITION
Bluetooth
ANT
Square wave, DC-coupled
SYM
MIN
TYP
32768
t_r and t_f
V_IH
V_IL
15%
0.65 ×
VDD_IO
0
1
50%
MAX
±250
±50
UNIT
Hz
ppm
200
ns
85%
VDD_IO V peak
0.35 ×
VDD_IO
5
V peak
MΩ
pF
5.7.2.2 External Fast Clock Crystal Requirements and Operation
CHARACTERISTICS
Supported crystal frequencies
Frequency accuracy
(Initial + temperature + aging)
Crystal oscillator negative resistance
CONDITION
26 MHz, external capacitance = 8 pF
I_osc = 0.5 mA
26 MHz, external capacitance = 20 pF
I_osc = 2.2 mA
SYM
f_in
MIN
TYP
26, 38.4
650
940
490
710
MAX
±20
UNIT
MHz
ppm
Ω
5.7.2.3 Fast Clock Source Requirements (–40°C to +85°C)
CHARACTERISTICS
CONDITION
Supported frequencies
Reference frequency accuracy Initial + temp + aging
Fast clock input voltage limits Square wave, DC-coupled
V_IL
V_IH
Sine wave, AC-coupled
Sine wave, DC-coupled
Sine wave input limits, DC-coupled
SYM
F_REF
MIN
TYP
26, 38.4
–0.2
1.0
0.4
0.4
0.0
MAX
±20
0.37
2.1
1.6
1.6
1.6
UNIT
MHz
ppm
V
V
V_p-p
V_p-p
V
14
Specifications
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