PDIUSBD11 Datasheet, PDF (14/20 Pages) NXP Semiconductors – USB device with serial interface

Philips Semiconductors
USB device with serial interface
Product specification
PDIUSBD11
AC CHARACTERISTICS (I²C pins)
All timing values are valid within the operating supply voltage and ambient temperature range and reference to V_IL and V_IH with an input voltage
swing of V_SS and V_DD.
SYMBOL
PARAMETER
TEST CONDITIONS
MIN
MAX
UNIT
F_SCL
S_CL clock frequency
1000
kHz
t_BUF
Bus free time
0.5
ms
t_SU;STA Start condition set-up time
0.25
ms
t_HD;STA Start condition hold time
0.25
ms
t_LOW
S_CL LOW time
0.45
ms
t_HIGH
S_CL HIGH time
0.45
ms
t_r
S_CL and S_DA rise time
0.3
ms
t_f
S_CL and S_DA fall time
0.1
ms
t_SU;DAT Data set-up time
100
ns
t_HD;DAT Data hold time
0
ns
t_VD;DAT S_CL LOW to data out valid
0.4
ms
t_SU;STO Stop condition set-up time
0.25
ms
A detailed description of the I²C-bus specification, with applications, is given in the brochure “The I²C-bus and how to use it”. This brochure may
be ordered using the Philips order number 9398 393 40011.
PROTOCOL
START
CONDITION
(S)
BIT 7
MSB
(A7)
BIT 6
(A6)
BIT 0
LSB
(R/W)
ACKNOWLEDGE
(A)
STOP
CONDITION
(P)
t_SU;STA
SCL
SDA
t_BUF
t_LOW
t_HIGH
1/f_SCL
t_r
t_f
t_HD;STA
t_SU;DAT
t_HD;DAT
t_VD:DAT
Figure 2. I²C-bus timing diagram
t_SU;STO
SV00756
1999 Jul 22
14