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ATA6628 Datasheet(PDF) 26 Page - ATMEL Corporation

Part No. ATA6628
Description  Negative Trigger Input for Watchdog
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Manufacturer  ATMEL [ATMEL Corporation]
Direct Link  http://www.atmel.com
Logo ATMEL - ATMEL Corporation

ATA6628 Datasheet(HTML) 26 Page - ATMEL Corporation

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26
9117E–AUTO–07/10
ATA6628/ATA6630 [Preliminary]
10
Internal Timers
10.1
Dominant time for
wake-up via LIN bus
VLIN = 0V
LIN
tbus
30
90
150
µs
A
10.2
Time delay for mode
change from Fail-safe into
Normal Mode via EN pin
V
EN = VCC
EN
t
norm
515
20
µs
A
10.3
Time delay for mode
change from Normal
Mode to Sleep Mode via
EN pin
VEN = 0V
EN
tsleep
27
12
µs
A
10.4
TXD dominant time-out
time
VTXD = 0V
TXD
tdom
27
55
70
ms
A
10.5
Time delay for mode
change from Silent Mode
into Normal Mode via EN
V
EN = VCC
EN
t
s_n
515
40
µs
A
10.6
Monitoring time for
wake-up over LIN bus
LIN
t
mon
610
15
ms
A
LIN Bus Driver AC Parameter with Different Bus Loads
Load 1 (small): 1 nF, 1 k
Ω ; Load 2 (large): 10 nF, 500Ω ; R
RXD =5kΩ; CRXD =20pF;
Load 3 (medium): 6.8 nF, 660
Ω characterized on samples; 10.7 and 10.8 specifies the timing parameters for proper operation of
20 Kbit/s, 10.9 and 10.10 at 10.4 Kbit/s
10.7 Duty cycle 1
TH
Rec(max) = 0.744 × VS
TH
Dom(max) = 0.581 × VS
VS = 7.0V to 18V
t
Bit = 50 µs
D1 = tbus_rec(min)/(2 × tBit)
LIN
D1
0.396
A
10.8 Duty cycle 2
THRec(min) = 0.422 × VS
TH
Dom(min) = 0.284 × VS
VS = 7.6V to 18V
tBit = 50 µs
D2 = t
bus_rec(max)/(2 × tBit)
LIN
D2
0.581
A
10.9 Duty cycle 3
THRec(max) = 0.778 × VS
THDom(max) = 0.616 × VS
V
S = 7.0V to 18V
tBit = 96 µs
D3 = tbus_rec(min)/(2 × tBit)
LIN
D3
0.417
A
10.10 Duty cycle 4
TH
Rec(min) = 0.389 × VS
THDom(min) = 0.251 × VS
VS = 7.6V to 18V
t
Bit = 96 µs
D4 = tbus_rec(max)/(2 × tBit)
LIN
D4
0.590
A
10.11
Slope time falling and
rising edge at LIN
VS = 7.0V to 18V
LIN
tSLOPE_fall
t
SLOPE_rise
3.5
22.5
µs
A
11
Receiver Electrical AC Parameters of the LIN Physical Layer, LIN Receiver, RXD Load Conditions (CRXD): 20 pF
11.1
Propagation delay of
receiver (Figure 9-1)
V
S = 7.0V to 18V
t
rx_pd = max(trx_pdr , trx_pdf)
RXD
trx_pd
6µs
A
11.2
Symmetry of receiver
propagation delay rising
edge minus falling edge
V
S = 7.0V to 18V
trx_sym = trx_pdr – trx_pdf
RXD
t
rx_sym
–2
+2
µs
A
9.
Electrical Characteristics (Continued)
5V < VS < 27V, –40°C < Tj < 150°C, unless otherwise specified. All values refer to GND pins
No.
Parameters
Test Conditions
Pin
Symbol
Min.
Typ.
Max.
Unit
Type*
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter


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