DS80C411 Maxim, DS80C411 Datasheet - Page 14

• Manufacturer Part Number: DS80C411
• Description: The DS80C410/DS80C411 network microcontrollers offer the highest integration available in an 8051 device
• Manufacturer: Maxim

ELECTRICAL CHARACTERISTICS (NONMULTIPLEXED ADDRESS/DATA BUS)
(V
Note 1:
Note 2:
Note 3:
Note 4:
Note 5:
Note 6:
External Crystal Frequency
External Oscillator Frequency
PSEN Pulse Width
PSEN Low to Valid Instruction In
Input Instruction Hold After PSEN
Input Instruction Float After PSEN
Port 7 Address to Valid Instruction In
Port 2, 4, 6 Address or Port 4 CE to Valid
Instruction In
Clock Multiplier 4X Mode
Clock Mutliplier 2X Mode
Clock Multiplier 4X Mode
Clock Mutliplier 2X Mode
CC3
= 3.0V to 3.6V, V
AC electrical characteristics assume 50% duty cycle for the oscillator, oscillator frequency ≤ 75MHz, and are not 100% production
tested, but are guaranteed by design.
All parameters apply to both commercial and industrial temperature operation, unless otherwise noted.
t
the System Clock Time Periods table.
The precalculated 75MHz min/max timing specifications assume an exact 50% duty cycle.
All signals characterized with load capacitance of 80pF except Port 0, Port 2, ALE, PSEN, RD, and WR with 100pF. The following
signals, when configured for memory interface, are also characterized with 100pF loading: Port 4 (CE0-3, A16–A19), Port 5.4–5.7
(PCE0-3), Port 6.0–6.5 (CE4-7, A20, A21), Port 7 (demultiplexed mode A0–A7).
References to the XTAL, XTAL1, or CLK signal in the timing diagrams are to assist in determining the relative occurrence of events,
not for determining absolute signal timing with respect to the external clock.
CLCL
, t
PARAMETER
CLCH
, t
CHCL
are time periods associated with the internal system clock and are related to the external clock (t
CC1
= 1.8V ±10%, T
SYMBOL
A
1 / t
1 / t
t
t
t
t
t
t
AVIV1
AVIV2
= -40°C to +85°C.) (Note 1)
PLPH
PXIX
PXIZ
PLIV
CLK
CLK
14 of 102
21.7
MIN
0
75MHz
MAX
21.0
24.7
8.7
2t
CLCL
MIN
DC
16
11
16
11
4
0
VARIABLE CLOCK
- 5
3t
Characteristics
CLCL
See MOVX
2t
3t
CLCL
CLCL
18.75
18.75
MAX
+ t
37.5
37.5
40
75
CLCH
- 18
- 19
CLK
- 22
) as defined in
UNITS
MHz
MHz
ns
ns
ns
ns
ns
ns