AM186EM Datasheet, PDF (90/98 Pages) List of Unclassifed Manufacturers – MICROCONTROLLER BLOCK DIAGRAM

PRELIMINARY
SWITCHING CHARACTERISTICS over COMMERCIAL operating range
Reset and Bus Hold (20 MHz and 25 MHz)
Parameter
No. Symbol
Description
Reset and Bus Hold Timing Requirements
5
t_CLAV AD Address Valid Delay and BHE
15 t_CLAZ AD Address Float Delay
57 t_RESIN RES Setup Time
58
t_HVCL HOLD Setup^(a)
Reset and Bus Hold Timing Responses
62 t_CLHAV HLDA Valid Delay
63 t_CHCZ Command Lines Float Delay
64
t_CHCV
Command Lines Valid Delay
(after Float)
Preliminary
20 MHz
25 MHz
Min Max Min Max Unit
0
25
0
20 ns
0
25
0
20 ns
10
10
ns
10
10
ns
0
25
0
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.
a This timing must be met to guarantee recognition at the next clock.
Reset and Bus Hold (33 MHz and 40 MHz)
Parameter
No. Symbol
Description
Reset and Bus Hold Timing Requirements
5
t_CLAV AD Address Valid Delay and BHE
15 t_CLAZ AD Address Float Delay
57 t_RESIN RES Setup Time
58
t_HVCL HOLD Setup^(a)
Reset and Bus Hold Timing Responses
62 t_CLHAV HLDA Valid Delay
63 t_CHCZ Command Lines Float Delay
64
t_CHCV
Command Lines Valid Delay
(after Float)
Preliminary
33 MHz
40 MHz
Min Max Min Max Unit
0
15
0
12 ns
0
15
0
12 ns
8
5
ns
8
5
ns
0
15
0
12 ns
15
12 ns
15
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.
a This timing must be met to guarantee recognition at the next clock.
90
Am186/188EM and Am186/188EMLV Microcontrollers