Z8615 Datasheet, PDF (7/10 Pages) Zilog, Inc. – NMOSZ8 8-BITMCU KEYBOARD CONTROLLER

TOLERANCE VALUES
Z8615
CPS DC-4143-05
The Z8615 provides internal pull-up resistors. Tolerances
for these resistors consists of the following:
Resistor
2.4K
10.4K
Tolerance
± 25%
± 35%
The RC Oscillator option provided on the Z8615 requires an
external 1% precision resistor. Tolerance for the oscillator
consists of the following:
Frequency:
Tolerance:
4 MHz to 5 MHz
+ 10%, – 10%
Note:
1) All Characteristics stated above are specified
according to the following:
V_CC = 4.75 to 5.25
Temperature = 15°C to 55°C
2) To measure the RC oscillator's frequency, use only a high-
impedance probe (10 Mohms, 2 pf) to probe XTAL2 (Pin 2). Other
probes with higher capacitance loading can create strong ground
bounces which shift the frequency reading at XTAL2. Also, do not
probe XTAL1 when measuring the RC frequency. Refer to the
procedure for Test Conditions and Methodology.
3) To measure the POR delay, apply a square wave (amplitude = 4
volts, frequency ~ .5 Hertz) to RESET (Pin 6) then measure the time it
takes for Data Strobe (Pin 8) to go high after RESET goes high. Refer
to the procedure for Test Conditions and Methodology.
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