Owner manual

CS5529
8 DS246F5
SWITCHING CHARACTERISTICS (T
A
= 2 5 ° C ; V A ± = ± 2. 5 V ± 5% , V D+ = 3 V ±5 % or 5 V ±5 % ;
Input Levels: Logic 0 = 0 V, Logic 1 = VD+; C
L
= 50pF)
Notes: 19. Device parameters are specified with 32.768 kHz clock, however, clocks up to 100 kHz can be used for
increased throughput.
20. Specified using 10% and 90% points on waveform of interest. Output loaded with 50 pF.
21. Oscillator start-up time varies with crystal parameters. This specification does not apply when using an
external clock source.
Parameter Symbol Min Typ Max Unit
Master Clock Frequency: External Clock or Internal Oscillator
(Note19)
XIN 30 32.768 100 kHz
Master Clock Duty Cycle 40 - 60 %
Rise Times (Note 20)
Any Digital Input Except SCLK
SCLK
Any Digital Output
t
rise
-
-
-
-
-
50
1.0
100
-
µs
µs
ns
Fall Times (Note 20)
Any Digital Input Except SCLK
SCLK
Any Digital Output
t
rise
-
-
-
-
-
50
1.0
100
-
µs
µs
ns
Start-up
Oscillator Start-up Time XTAL = 32.768 kHz (Note 21) t
ost
-500-ms
Power-on Reset Period t
por
- 1002 - XIN
cycles
Serial Port Timing
Serial Clock Frequency SCLK 0 - 2 MHz
Serial Clock Pulse Width High
Pulse Width Low
t
1
t
2
250
250
-
-
-
-
ns
ns
SDI Write Timing
CS
Enable to Valid Latch Clock t
3
50 - - ns
Data Set-up Time prior to SCLK rising t
4
50 - - ns
Data Hold Time After SCLK Rising t
5
100 - - ns
SCLK Falling Prior to CS
Disable t
6
100 - - ns
SDO Read Timing
CS
to Data Valid t
7
--150ns
SCLK Falling to New Data Bit t
8
--150ns
CS
Rising to SDO Hi-Z t
9
--150ns