Z86E3016ESE ZILOG [Zilog, Inc.], Z86E3016ESE Datasheet - Page 29
Z86E3016ESE
Manufacturer Part Number
Z86E3016ESE
Description
Z8 4K OTP Microcontroller
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.Z86E3016ESE.pdf
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Port 3 (P37-P30). Port 3 is an 8-bit, CMOS-compatible
port with four fixed inputs (P33-P30) and four fixed outputs
(P37-P34). These eight lines can be configured by soft-
ware for interrupt and handshake control functions. Port 3,
Pin 0 is Schmitt- triggered. P31, P32 and P33 are standard
CMOS inputs with single trip point (no Auto Latches) and
P34, P35, P36 and P37 are push-pull output lines. Low
EMI output buffers can be globally programmed by the
software. Two on-board comparators can process analog
signals on P31 and P32 with reference to the voltage on
P33. The analog function is enabled by setting the D1 of
Port 3 Mode Register (P3M). The comparator output can
be outputted from P34 and P37, respectively, by setting
PCON register Bit D0 to 1 state. For the interrupt function,
P30 and P33 are falling edge triggered interrupt inputs.
P31 and P32 can be programmed as falling, rising or both
edges triggered interrupt inputs (Figure 21). Access to
Counter/Timer 1 is made through P31 (T
(T
also available on Port 3 (Table 9).
DS97Z8X0500
OUT
). Handshake lines for Port 0, Port 1, and Port 2 are
IN
) and P36
P R E L I M I N A R Y
Note: P33-P30 differs from the Z86C30/C31/C40 in that
there is no clamping diode to V
voltage circuits. Exceeding the V
during standard operating mode may cause the device to
enter EPROM mode.
Z8 4K OTP Microcontroller
CC
IH
due to the EPROM high-
maximum specification
Z86E30/E31/E40
29
1
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