參數(shù)資料
型號: WM8148
廠商: Wolfson Microelectronics
英文描述: TVS BIDIRECT 400W 5.0V SMA
中文描述: 12-bit/12MSPS防治荒漠化公約/獨聯(lián)體模擬前端/數(shù)字轉換器
文件頁數(shù): 11/43頁
文件大?。?/td> 491K
代理商: WM8148
WM8148
Production Data
WOLFSON MICROELECTRONICS LTD
PD Rev 4.0 April 1999
11
SERIAL INTERFACE
SCK
SDI
SEN
SDO
t
SPER
t
SCKL
t
SCKH
t
SSU
t
SH
t
SCE
t
SEW
t
SEC
t
SESD
t
SCSD
t
SCSDZ
Figure 7 Serial Interface Timing
TEST CONDITIONS
AVDD = 4.75 to 5.25V, DVDD1 and DVDD2 = 2.97 to 5.25V, AGND = DGND = 0V, T
A
= 0 to 70
°
C, MCLK = 48MHz unless
otherwise stated (AVDD denotes the voltage applied to all AVDD pins).
PARAMETER
SCK period
SYMBOL
t
SPER
TEST CONDITIONS
MIN
83.3
TYP
MAX
UNITS
ns
SCK high
t
SCKH
20
ns
SCK low
t
SCKL
20
ns
SDI set-up time
t
SSU
10
ns
SDI hold time
t
SH
10
ns
SCK to SEN set-up time
t
SCE
20
ns
SEN to SCK set-up time
t
SEC
20
ns
SEN pulse width
t
SEW
50
ns
SEN low to SDO out
t
SESD
35
ns
SCK low to SDO out
t
SCSD
35
ns
SCK low to SDO high impedance
t
SCSDZ
25
ns
Note:
Parameters are measured at 50% of the rising/falling edge.
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