ez80190 ZiLOG Semiconductor, ez80190 Datasheet - Page 30

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

PS006613-0306
Pin # Symbol
72
73
74
75
PC5
DSR1
PC6
DCD1
PC7
RI1
TEST
Table 1. 100-Pin LQFP Pin Identification of the eZ80190 Device (Continued)
Function
GPIO Port C
Data Set
Ready
GPIO Port C
Data Carrier
Detect
GPIO Port C
Ring Indicator Input, Active Low
Test
Signal Direction
Input/Output
Input, Active Low
Input/Output
Input, Active Low
Input/Output
Input, Active High The TEST pin places the chip in TEST mode. It is
PRELIMINARY
Description
The PC5 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 C pin, when
programmed as an output, can be selected to be
an open-drain or open-source output. Port C is
multiplexed with one channel of the UZI interface.
The DSR1 pin carries the modem status signal to
the UART. This signal is multiplexed with PC5.
The PC6 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 C pin, when
programmed as an output, can be selected to be
an open-drain or open-source output. Port C is
multiplexed with one channel of the UZI interface.
The DCD1 pin carries the modem status signal to
the UART. This signal is multiplexed with PC6.
The PC7 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 C pin, when
programmed as an output, can be selected to be
an open-drain or open-source output. Port C is
multiplexed with one channel of the UZI interface.
The RI1 pin carries the modem status signal to
the UART. This signal is multiplexed with PC7.
used only for factory testing. This signal should
be tied Low for normal operation.
Architectural Overview
16