參數(shù)資料
型號: 935265527551
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: SPECIALTY MICROPROCESSOR CIRCUIT, PQFP64
封裝: PLASTIC, QFP-64
文件頁數(shù): 36/55頁
文件大?。?/td> 387K
代理商: 935265527551
1999 May 10
41
Philips Semiconductors
Preliminary specication
Universal Serial Bus (USB) CODEC
UDA1325
SDA and SCL lines for 100 kHz I2C devices
fSCL
SCL clock frequency
0
100
kHz
tBUF
bus free time between a STOP and
START condition
4.7
s
tHD;STA
hold time (repeated) START
condition
4.0
s
tLOW
LOW period of the SCL clock
4.7
s
tHIGH
HIGH period of the SCL clock
4.0
s
tSU;STA
set-up time for a repeated START
condition
4.7
s
tSU;STO
set-up time for STOP condition
4.0
s
tHD;DAT
data hold time
5.0
s
tSU;DAT
data set-up time
250
ns
tr
rise time of both SDA and SCL
signals
1000
ns
tf
fall time of both SDA and SCL
signals
300
ns
CL(bus)
capacitive load for each bus line
400
pF
Oscillator 1 (system clock)
fosc
oscillator frequency
48
MHz
δ
duty factor
50
%
gm
transconductance
12.8
22.1
30.2
mS
Ro
output resistance
0.6
1.1
2.3
k
Ci(XTAL1a)
parasitic input capacitance XTAL1a
4.5
4.8
5.2
pF
Ci(XTAL2a)
parasitic input capacitance XTAL2a
4.1
4.6
5.0
pF
Istart
start-up current
3.7
7.6
13.0
mA
Oscillator 2 (for ADC clock)
fosc
oscillator frequency
8.192
14.08
MHz
δ
duty cycle
50
%
gm
transconductance
8.1
13.6
18.1
mA/V
Ro
output resistance
1.3
2.0
4.0
k
Ci(XTAL1b)
parasitic input capacitance XTAL1b
5.0
5.4
5.7
pF
Ci(XTAL2b)
parasitic input capacitance XTAL2b
4.1
4.6
5.0
pF
Istart
start-up current
2.4
5.0
8.4
mA
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
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