NS486SXL Datasheet, PDF (16/26 Pages) National Semiconductor (TI) – Optimized 32-Bit 486-Class Controller with On-Chip Peripherals for Embedded Systems

Real Time Clock (RTCX1/CLK)
Symbol
Parameter
V_IH
V_IL
V_BAT
I_BAT
RTCX1 Input High Voltage
RTCX1 Input Low Voltage
Battery Voltage
Battery Current
Note 9: RTCX2 is the output.
Note 10: Lithium Battery.
(Note 9)
(Note 10)
Conditions
Timer
Symbol
V_OH
V_OL
Parameter
Output High Voltage
Output Low Voltage
Conditions
I_OH = −6 mA on: T0, T1
I_OL = 6 mA on: T0, T1
General Purpose Chip Selects
Symbol
V_OH
V_OL
Parameter
Output High Voltage
Output Low Voltage
Conditions
I_OH = −6 mA on: CS5–0
I_OL = 6 mA on: CS5–0
Interrupt Controller
Symbol
V_OH
V_OL
Parameter
Output High Voltage
Output Low Voltage
Conditions
I_OH = −12 mA on: INTA
I_OL = 12 mA on: INTA
3-Wire I/O (and Access.bus)
Symbol
V_OH
V_OL
Parameter
Output High Voltage
Output Low Voltage
Conditions
I_OH = −12 mA on: SO, SI, SCLK
I_OL = 12 mA on: SO, SI, SCLK
General AC Specifications
AC TEST CONDITIONS
Test Circuit for Output Tests
Min
Max
Unit
2.0
0.4
V
2.4
V
Min
Max
Unit
2.4
V
0.4
V
Min
Max
Unit
2.4
V
0.4
V
Min
Max
Unit
2.4
V
0.4
V
Min
Max
Unit
2.4
V
0.4
V
Note 1: S₁ = V_CC for t_PZL, anf t_PLZ measurements.
S₁ = GND for t_PZH, and t_PHZ measurements
S₁ = Open for push pull outputs
Note 2: R_L = 1.1k
Note 3: C_L includes scope and jig capacitance
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