SMCXXXAF Datasheet, PDF (20/82 Pages) Numonyx B.V – 32 Mbyte, 64 Mbyte, 128 Mbyte, 256 Mbyte and 512 Mbyte 3.3 V / 5 V supply CompactFlash™ card

Electrical interface
SMCxxxAF
4.2
Electrical specification
Table 10 defines the DC characteristics for the CompactFlash memory card. Unless
otherwise stated, conditions are:
● V_CC = 5 V ± 10%
● V_CC = 3.3 V ± 10%
● -40 °C to 85 °C
Table 11 shows that the card operates correctly in both the voltage ranges and that the
current requirements must not exceed the maximum limit shown.
Table 10. Absolute maximum conditions
Parameter
Input power
Voltage on any pin except V_CC with respect to GND
Symbol
Conditions
V_CC
–0.3 V to 6.5 V
V
–0.5 V to V_CC + 0.5 V
Table 11. Input power
Voltage
Maximum average RMS current
3.3 V ± 10%
5 V ± 10%
79 mA
82 mA
Measurement conditions
-40 + 85 °C
-40 + 85 °C
4.3
Current measurement
The current is measured by connecting an amp meter in series with the V_CC supply. The
meter should be set to the 2 A scale range, and have a fast current probe with an RC filter
with a time constant of 0.1 ms. Current measurements are taken while looping on a data
transfer command with a sector count of 128. Current consumption values for both read and
write commands are not to exceed the maximum average RMS current specified in
Table 11. Table 12 shows the Input leakage current, Table 13 the Input characteristics,
Table 14 the Output drive type and Table 15 the Output drive characteristics.
Table 12. Input leakage current⁽¹⁾
Type
Parameter
Symbol Conditions Min
Typ
Max
Units
IxZ
Input leakage current
V_IH = V_CC
IL
–1
V_IL = GND
1
µA
IxU
Pull up resistor
RPU1
V_CC = 5.0 V
50
500
kW
IxD
Pull down resistor
RPD1
V_CC = 5.0 V
50
500
kW
1. x refers to the characteristics described in Table 13. For example, I1U indicates a pull up resistor with a type 1 input
characteristic.
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