AM186EM Datasheet, PDF (93/98 Pages) List of Unclassifed Manufacturers – MICROCONTROLLER BLOCK DIAGRAM

PRELIMINARY
SWITCHING CHARACTERISTICS over COMMERCIAL operating range
Synchronous Serial Interface (SSI) (20 MHz and 25 MHz)
Preliminary
Parameter
20 MHz
25 MHz
No. Symbol
Description
Min
Max
Min
Max Unit
Synchronous Serial Port Timing Requirements
75 t_DVSH Data Valid to SCLK High
10
77 t_SHDX SCLK High to SPI Data Hold
3
Synchronous Serial Port Timing Responses
10
ns
3
ns
71 t_CLEV CLKOUTA Low to SDEN Valid
72 t_CLSL CLKOUTA Low to SCLK Low
78 t_SLDV SCLK Low to Data Valid
25
20 ns
25
20 ns
25
20 ns
Note:
All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions
are with C_L = 50 pF. For switching tests, V_IL = 0.45 V and V_IH = 2.4 V, except at X1 where V_IH = V_CC – 0.5 V.
Synchronous Serial Interface (SSI) (33 MHz and 40 MHz)
Preliminary
Parameter
33 MHz
40 MHz
No. Symbol
Description
Min
Max
Min
Max Unit
Synchronous Serial Port Timing Requirements
75 t_DVSH Data Valid to SCLK High
8
77 t_SHDX SCLK High to SPI Data Hold
2
Synchronous Serial Port Timing Responses
5
ns
2
ns
71 t_CLEV CLKOUTA Low to SDEN Valid
72 t_CLSL CLKOUTA Low to SCLK Low
78 t_SLDV SCLK Low to Data Valid
0
15
0
12 ns
0
15
0
12 ns
0
15
0
12 ns
Note:
All timing parameters are measured at 1.5 V with 50 pF loading on CLKOUTA unless otherwise noted. All output test conditions
are with C_L = 50 pF. For switching tests, V_IL = 0.45 V and V_IH = 2.4 V, except at X1 where V_IH = V_CC – 0.5 V.
Am186/188EM and Am186/188EMLV Microcontrollers
93