mfr4200 Freescale Semiconductor, Inc, mfr4200 Datasheet - Page 232

• Manufacturer Part Number: mfr4200
• Description: Flexray Communication Controllers
• Manufacturer: Freescale Semiconductor, Inc

1
Electrical Characteristics
A.3.2
The device features an internal Pierce oscillator. The device does not have a clock monitor.
A.4
The CC AMI Interface read/write timing diagram is shown on the
232
Conditions are shown in
Num C
10
11
12
Depending on the crystal a damping series resistor might be necessary
1
2
3
6
7
8
9
•
•
•
C Crystal oscillator range (Pierce)
P Startup Current
C Oscillator start-up time
P External square wave input frequency
D External square wave pulse width low
D External square wave pulse width high
D External square wave rise time
D External square wave fall time
D Input Capacitance (EXTAL, XTAL pins)
C DC Operating Bias in Pierce mode on EXTAL Pin
Writing to the device is accomplished when Chip Enable(CE#) and Write Enable (WE#) inputs are
low (asserted).
Reading from the device is accomplished when Chip Enable (CE#) and Output Enable (OE#) are
low (asserted) while the Write Enable (WE#) is high (negated).
The input/output pins (D[15:0]) are in a high-impedance state when the device is not selected (CE#
is high), the outputs are disabled (OE# is high) or during a write operation (CE# is low, WE# is
low).
AMI Interface Timing Diagram
Oscillator
Table A-4
Rating
unless otherwise noted
Table A-12. Oscillator Characteristics
1
MFR4200 Data Sheet, Rev. 0
Symbol
V
t
UPOSC
t
t
t
t
DCBIAS
f
i
EXTH
EXTR
f
EXTL
EXTF
OSC
OSC
C
EXT
IN
Figure
Min
100
0.5
0.5
9.5
9.5
-
-
-
-
-
A-2.
TBD
Typ
7
-
-
-
-
-
-
-
-
Freescale Semiconductor
Max
TBD
40
50
1
1
-
-
-
-
-
MHz
MHz
Unit
PA
ms
pF
ns
ns
ns
ns
V