mc33742 Freescale Semiconductor, Inc, mc33742 Datasheet - Page 17

• Manufacturer Part Number: mc33742
• Description: Mc33742 System Basis Chip Sbc With Enhanced High-speed Can Transceiver
• Manufacturer: Freescale Semiconductor, Inc

Table 6. Dynamic Electrical Characteristics
noted reflect the approximate parameter mean at T
DIGITAL INTERFACE TIMING (SCLK, CS, MOSI, MISO)
STATE MACHINE TIMING (CS, SCLK, MOSI, MISO, WDOG, INT)
Notes
Analog Integrated Circuit Device Data
Freescale Semiconductor
SPI Operation Frequency
SCLK Clock Period
SCLK Clock High Time
SCLK Clock Low Time
Falling Edge of CS to Rising Edge of SCLK
Falling Edge of SCLK to Rising Edge of CS
MOSI to Falling Edge of SCLK
Falling Edge of SCLK to MOSI
MISO Rise Time
MISO Fall Time
Time from Falling or Rising Edges of CS
Time from Rising Edge of SCLK to MISO Data Valid
Delay Between CS LOW-to-HIGH Transition (at End of SPI Stop Command)
and Stop Mode Activation
Interrupt Low-Level Duration
Internal Oscillator Frequency
Watchdog Period Normal and Standby Modes
28.
29.
30.
31.
Characteristics noted under conditions 4.75 V ≤ V2 ≤ 5.25 V, 5.5 V ≤ V
C
C
MISO Low Impedance
MISO High Impedance
0.2 V
Stop Mode
Period 1
Period 2
Period 3
Period 4
L
L
= 220 pF
= 220 pF
See
Not production tested. Guaranteed by design.
Not production tested. Guaranteed by design. Detected by V2 OFF.
f
OSC
DD
Figure 7, SPI Timing
≤ MISO ≥ 0.8 V
is indirectly measured (1.0 ms reset) and trimmed.
(29)
(29)
(30)
DD
Characteristic
, C
(31)
Diagram, page 21.
L
= 200 pF
DYNAMIC ELECTRICAL CHARACTERISTICS
A
= 25°C under nominal conditions unless otherwise noted.
(28)
t
t
t
SUP
Symbol
WSCLKH
CS-STOP
WSCLKL
t
t
t
t
t
t
t
f
t
SODIS
f
WDOG
t
t
SOEN
VALID
PCLK
LEAD
t
t
SISU
REQ
RSO
OSC
LAG
FSO
SIH
INT
≤ 18 V, and -40°C ≤ T
DYNAMIC ELECTRICAL CHARACTERISTICS
0.25
8.58
39.6
Min
250
125
125
100
100
308
7.0
40
40
18
88
—
—
—
—
—
—
ELECTRICAL CHARACTERISTICS
A
9.75
Typ
100
100
350
—
—
—
—
—
—
—
—
25
25
—
—
—
—
10
45
≤ 125°C. Typical values
10.92
Max
50.4
N/A
N/A
N/A
N/A
N/A
N/A
N/A
112
392
4.0
50
50
50
50
50
34
13
—
Unit
MHz
kHz
ms
33742
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
µs
17