STFPC320 STMicroelectronics, STFPC320 Datasheet - Page 70

• Manufacturer Part Number: STFPC320
• Description: Front Panel Controller/driver With Standby Power Management And Real-time Clock
• Manufacturer: STMicroelectronics

Electrical characteristics
17.8
70/75
Switching characteristics
Table 19.
1. Transmitter must internally provide a hold time to bridge the undefined region (300ns max) of the falling
Table 20.
Symbol
t
Symbol
t
t
UNMUTE
t
t
t
SU:STO
HD:STA
HD:DAT
t
edge of the SCL.
SU:STA
SU:DAT
t
t
t
t
MUTE
t
f
t
HIGH
t
t
TZH1
TZH2
t
LOW
t
OSC
SCL
BUF
THZ
PLZ
PZL
C
t
rec
t
R
F
I
SCL clock frequency
Clock low period
Clock high period
SDA and SCL rise time
SDA and SCL fall time
START condition hold time
(After this period the first clock pulse is generated)
START condition setup time
(only relevant for a repeated start condition)
Data setup time
Data hold time
STOP condition setup time
Time the bus must be free before a new
transmission can start
Watchdog output pulse width
Time delay of turning off MUTE after READY is
set high
Time delay of turning on MUTE before STBY is
set high
Oscillation frequency R = 33 kΩ ± 1%
Propagation delay
time
Rise time
Fall time
Input capacitance
Switching characteristics
(T
Switching characteristics (T
A
= -20 to +70 °C, V
Parameter
(1)
Parameter
CLK -> SDA
C
C
Seg
Grid
Seg
Seg
C
L
L
L
DD
= 15pF, R
= 300pF
= 300pF, Seg
1
13
20
1
Test conditiong
to Seg
= 3.3V, V
to Grid
/Grid
/Grid
16
9
A
12
8
L
= -20 to +70 °C, V
to
,
= 10kΩ
SS
n
, Grid
= -30V)
n
Min.
Min
600
600
600
100
600
430
1.3
1.3
10
10
96
0
0
DD
= 3.3V, V
Typ
Typ.
500
SS
Max
Max.
= -30V)
400
300
300
565
300
100
120
98
80
80
0.5
15
2
STFPC320
Units
Unit
kHz
kHz
ms
pF
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
µs
µs
µs
µs