SLRC400 Datasheet, PDF (118/130 Pages) NXP Semiconductors – I·CODE Reader IC

Philips Semiconductors
I•CODE Reader IC
Product Specification Rev. 2.0 November 2001
SL RC400
19.4 Pin Characteristics
19.4.1 INPUT PIN CHARACTERISTICS
Pins D0 to D7, A0 and A1 have TTL input characteristics and behave as defined in the following table.
SYMBOL
ILeak
VT
PARAMETER
CONDITIONS
MIN
Input Leakage Current
-1.0
Threshold
0.8
Table 19-4: Standard Input Pin Characteristics
MAX
+1.0
2.0
UNIT
µA
V
The digital input pins NCS, NWR, NRD, ALE and A2 have Schmitt-Trigger characteristics, and behave as
defined in the following table.
SYMBOL
ILeak
VT+
VT-
PARAMETER
Input Leakage Current
Positive-Going Threshold
Negative-Going Threshold
CONDITIONS
MIN
MAX
UNIT
-1.0
+1.0
µA
1.4
2.0
V
0.8
1.3
V
Table 19-5: Schmitt-Trigger Input Pin Characteristics
Pin RSTPD has Schmitt-Trigger CMOS characteristics. In addition, it is internally filtered with an RC-low-
pass filter, which causes a relevant propagation delay for the reset signal:
SYMBOL
ILeak
VT+
VT-
tRSTPD,p
PARAMETER
Input Leakage Current
Positive-Going Threshold
Negative-Going Threshold
Propagation Delay
CONDITIONS
MIN
-1.0
0.65 DVDD
0.25 DVDD
Table 19-6: RSTPD Input Pin Characteristics
MAX
+1.0
0.75 DVDD
0.4 DVDD
20
UNIT
µA
V
V
µs
The analog input pin RX has the following input capacitance:
SYMBOL
CRX
PARAMETER
Input Capacitance
CONDITIONS
MIN
Table 19-7: RX Input Capacitance
MAX
15
UNIT
pF
118
Preliminary