EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 39

• Manufacturer Part Number: EZ80F91MCU
• Description: eZ80Acclaim-TM Flash Microcontrollers
• Manufacturer: ZILOG [Zilog, Inc.]

Table 2. Pin Identification on the eZ80F91 Device (Continued)
PS019209-0504
LQFP
Pin #
83
84
85
86
87
88
89
90
Note: *PHY represents the physical layer of the OSI model.
BGA
Pin#
J10
G7
H12
H11
H10
H9
G12
G11
Symbol
LOOP_FILT PLL Loop
PLL_V
X
X
PLL_V
V
V
PC0
TxD1
OUT
IN
DD
SS
SS
DD
Function
Filter
Ground
System Clock
Oscillator
Output
System Clock
Oscillator Input
Power Supply
Power Supply
Ground
GPIO Port C
Transmit Data Output
P R E L I M I N A R Y
Signal Direction
Analog
Output
Input
Bidirectional with
Schmitt-trigger input
Description
Loop Filter pin for the Analog
PLL.
Ground for Analog PLL.
This pin is the output of the
onboard crystal oscillator. When
used, a crystal should be
connected between X
X
This pin is the input to the
onboard crystal oscillator for the
primary system clock. If an
external oscillator is used, its
clock output should be connected
to this pin. When a crystal is
used, it should be connected
between X
Power Supply for Analog PLL.
Power Supply.
Ground.
This pin can be used for general-
purpose I/O. It can be individually
programmed as input or output
and can also be used individually
as an interrupt input. Each Port C
pin, when programmed as output,
can be selected to be an open-
drain or open-source output. Port
C is multiplexed with one UART.
This pin is used by the UART to
transmit asynchronous serial
data. This signal is multiplexed
with PC0.
OUT
.
Product Specification
IN
and X
Architectural Overview
eZ80F91 MCU
OUT
IN
.
and
20