W77IE58 Datasheet, PDF (82/90 Pages) Winbond – 8-BIT MICROCONTROLLER

Preliminary W77IE58
Notes:
*1. RST pin is a Schmitt trigger input.
*2. P0, ALE and PSEN are tested in the external access mode.
*3. XTAL1 is a CMOS input.
*4. Pins of P1, P2, P3 can source a transition current when they are being externally driven from 1 to 0. The transition
current reaches its maximum value when VIN approximates to 2V.
AC ELECTRICAL CHARACTERISTICS
t CHCL
t CLCH
t CLCX
tCLCL
tCHCX
Note: Duty cycle is 50%.
External Clock Characteristics
PARAMETER
Clock High Time
Clock Low Time
Clock Rise Time
Clock Fall Time
SYMBOL
t_CHCX
t_CLCX
t_CLCH
t_CHCL
MIN.
12.5
12.5
-
-
TYP.
-
-
-
-
MAX.
-
-
10
10
UNITS
nS
nS
nS
nS
NOTES
AC Specification
PARAMETER
SYMBOL
Oscillator Frequency
ALE Pulse Width
Address Valid to ALE Low
Address Hold After ALE Low
Address Hold After ALE Low
for MOVX Write
ALE Low to Valid Instruction In
ALE Low to PSEN Low
PSEN Pulse Width
1/t_CLCL
t_LHLL
t_AVLL
t_LLAX1
t_LLAX2
t_LLIV
t_LLPL
t_PLPH
1/t_CLCL, 3V
VARIABLE
CLOCK
MIN.
0
1.5 t_CLCL - 5
0.5 t_CLCL - 5
0.5 t_CLCL - 5
0.5 t_CLCL - 5
VARIABLE
CLOCK
MAX.
UNITS
25
MHz
nS
nS
nS
nS
2.5t_CLCL - 20
nS
0.5 t_CLCL - 5
nS
2.0 t_CLCL - 5
nS
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