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Z0861705PSC Просмотр технического описания (PDF) - Zilog

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Z0861705PSC NMOS Z8 8-BIT MCU KEYBOARD CONTROLLER Zilog
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Z0861705PSC Datasheet PDF : 26 Pages
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PIN FUNCTIONS
RCIN This pin is connected between a precision resistor
on the power supply from the precision RC Oscillator.
CLK Out This pin is the syste m clock of the Z8 and
runs at the frequency of the RC Oscillator. Any load on
this pin will effect the RC Oscillator frequency.
Z08617 NMOS Z8® 8-BIT MCU
KEYBOARD CONTROLLER
Port 0 (P07-P00). Port 0 is an 8-bit, nibble program-
mable, bi-directional, NMOS compatible I/O port. These
eight I/O lines can be configured under software
control as a nibble input port, or as a nibble open-drain
output port. When used as an I/O port, inputs are
standard NMOS (Figure 5). Port P03-P00 has 10.4
Kohms (±35%) pull-up resistors when configured as
inputs.
4
Z8615
4
Port 0
I/O
(Open-Drain Output)
(a) Port P00-P03
10.4 Kohms
Input
OEN
Output
(b) Port P04-P07
Input
OEN
Output
Pad
Pad
Figure 5. Port 0 Configuration
6
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