ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 33

• Manufacturer Part Number: ez80190
• Description: Ez80190 Microprocessor
• Manufacturer: ZiLOG Semiconductor

PS006613-0306
Pin # Symbol
81
82
83
84
85
86
87
PD5
DSR0
PD6
DCD0
PD7
RI0
V
GND
X
X
DD
OUT
IN
Table 1. 100-Pin LQFP Pin Identification of the eZ80190 Device (Continued)
Function
GPIO Port D
Data Set
Ready
GPIO Port D
Data Carrier
Detect
GPIO Port D
Ring Indicator Input, Active Low
Power Supply
Ground
Oscillator
Output
Oscillator Input Input
Signal Direction
Input/Output
Input, Active Low
Input/Output
Input, Active Low
Input/Output
Output
PRELIMINARY
Description
The PD5 pin can be used for general-purpose I/
O. It can be individually programmed as an input
or output and can also be used individually as an
interrupt input. Each Port D pin, when
programmed as an output, can be selected to be
an open-drain or open-source output. Port D is
multiplexed with one channel of the UZI interface.
The DSR0 pin carries the modem status signal to
the UART. This signal is multiplexed with PC5
and PD5.
The PD6 pin can be used for general-purpose I/
O. It can be individually programmed as an input
or output and can also be used individually as an
interrupt input. Each Port D pin, when
programmed as an output, can be selected to be
an open-drain or open-source output. Port D is
multiplexed with one channel of the UZI interface.
The DCD0 pin carries the modem status signal to
the UART. This signal is multiplexed with PC6
and PD6.
The PD7 pin can be used for general-purpose I/
O. It can be individually programmed as an input
or output and can also be used individually as an
interrupt input. Each Port D pin, when
programmed as an output, can be selected to be
an open-drain or open-source output. Port D is
multiplexed with one channel of the UZI interface.
The RI0 pin carries the modem status signal to
the UART. This signal is multiplexed with PC7
and PD7.
Power Supply
Ground
The X
oscillator. When used, a crystal oscillator should
be connected between X
The X
oscillator. If an external oscillator is used, its clock
output should be connected to this pin. When a
crystal oscillator is used, it should be connected
between X
OUT
IN
pin is the input to the onboard crystal
pin is the output of the onboard crystal
IN
and X
OUT
.
IN
and X
Architectural Overview
OUT
.
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