WM8253
Production Data
Test Conditions
AVDD = DVDD1 = DVDD2 = 3.3V, AGND = DGND = 0V, TA = 25C, MCLK = 36MHz unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
5
TYP
9
MAX
13
UNITS
ns
Output propagation delay OPDLY = 00
Output propagation delay OPDLY = 01
Output propagation delay OPDLY = 10
tPD
tPD
tPD
I
OH = 1mA, IOL = 1mA
OH = 1mA, IOL = 1mA
OH = 1mA, IOL = 1mA
ns
I
I
8
12
13
16
ns
9
17
SERIAL INTERFACE
tSPER
tSCKL tSCKH
SCK
tSSU
tSH
SDI
SEN
SDO
tSCE
tSEW tSEC
tSCRDZ
tSERD
tSCRD
ADC
DATA
ADC DATA
MSB
LSB
REGISTER DATA
Figure 3 Serial Interface Timing
Test Conditions
AVDD = DVDD1 = DVDD2 = 3.3V, AGND = DGND = 0V, TA = 25C, MCLK =36MHz unless otherwise stated.
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNITS
SCK period
tSPER
41.6
ns
SCK high
tSCKH
tSCKL
tSSU
18.8
18.8
6
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
SCK low
SDI set-up time
SDI hold time
tSH
6
SCK to SEN set-up time
SEN to SCK set-up time
SEN pulse width
tSCE
12
12
25
tSEC
tSEW
tSERD
tSCRD
tSCRDZ
SEN low to SDO = Register data
SCK low to SDO = Register data
SCK low to SDO = ADC data
30
30
30
Note:
1.
Parameters are measured at 50% of the rising/falling edge
PD, Rev 4.1, August 2011
9
w
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
