Switching Characteristics over Commercial and Industrial Operating Ranges
Synchronous Serial Interface (SSI) (25 MHz and 33 MHz)
Preliminary
Parameter
25 MHz
Min
33 MHz
Min
No.
Symbol Description
Max
Max
Unit
Synchronous Serial Port Timing Requirements
tDVSH
tSHDX
75
77
Data Valid to SCLK High
10
3
8
2
ns
ns
SCLK High to SPI Data Hold
Synchronous Serial Port Timing Responses
CLKOUTA Low to
71
20
0
15
ns
tCLEV
SDEN1 or SDEN0 Valid
CLKOUTA Low to SCLK Low
SCLK Low to Data Valid
72
78
20
20
0
0
15
15
ns
ns
tCLSL
tSLDV
Note:
All timing parameters are measured at VCC/2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions
are with CL=50 pF. For switching tests, VIL=0.3 V and VIH =VCC–0.3 V.
Switching Characteristics over Commercial and Industrial Operating Ranges
Synchronous Serial Interface (SSI) (40 MHz and 50 MHz)
Preliminary
Parameter
Symbol Description
Synchronous Serial Port Timing Requirements
40 MHz
Min
50 MHz
Min
No.
Max
Max
Unit
tDVSH
tSHDX
75
77
Data Valid to SCLK High
5
2
5
2
ns
ns
SCLK High to SPI Data Hold
Synchronous Serial Port Timing Responses
CLKOUTA Low to
tCLEV
71
0
12
0
10
ns
SDEN1 or SDEN0 Valid
CLKOUTA Low to SCLK Low
SCLK Low to Data Valid
tCLSL
tSLDV
72
78
0
0
12
12
0
0
10
10
ns
ns
Note:
All timing parameters are measured at VCC/2 with 50 pF loading on CLKOUTA, unless otherwise noted. All output test conditions
are with CL=50 pF. For switching tests, VIL=0.3 V and VIH =VCC–0.3 V.
102
Am186TMER and Am188TMER Microcontrollers Data Sheet
AMD [ AMD ]
