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8.14.3.5 32 kHz RC Oscillator (RCOSC_LF)
Measured on a CC2652xSIP-EM reference design with T
c
= 25 °C, V
DDS
= 3.0 V, unless otherwise noted.
MIN TYP MAX UNIT
Calibrated frequency 32.8
(1)
kHz
Temperature coefficient. 50 ppm/°C
(1) When using RCOSC_LF as source for the low frequency system clock (SCLK_LF), the accuracy of the SCLK_LF-derived Real Time
Clock (RTC) can be improved by measuring RCOSC_LF relative to XOSC_HF and compensating for the RTC tick speed. This
functionality is available through the TI-provided Power driver.
8.14.4 Synchronous Serial Interface (SSI) Characteristics
8.14.4.1 Synchronous Serial Interface (SSI) Characteristics
over operating free-air temperature range (unless otherwise noted)
PARAMETER
NO.
PARAMETER MIN TYP MAX UNIT
S1 t
clk_per
SSIClk cycle time 12 65024 System Clocks
(2)
S2
(1)
t
clk_high
SSIClk high time 0.5 t
clk_per
S3
(1)
t
clk_low
SSIClk low time 0.5 t
clk_per
(1) Refer to SSI timing diagrams Figure 8-1, Figure 8-2, and Figure 8-3.
(2) When using the TI-provided Power driver, the SSI system clock is always 48 MHz.
SSIClk
SSIFss
SSITx
SSIRx
MSB LSB
S2
S3
S1
4 to 16 bits
Figure 8-1. SSI Timing for TI Frame Format (FRF = 01), Single Transfer Timing Measurement
CC2652PSIP
SWRS263A – FEBRUARY 2021 – REVISED JUNE 2022
www.ti.com
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