EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 35
EZ80F91MCU
Manufacturer Part Number
EZ80F91MCU
Description
eZ80Acclaim-TM Flash Microcontrollers
Manufacturer
ZILOG [Zilog, Inc.]
Datasheet
1.EZ80F91MCU.pdf
(396 pages)
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Table 2. Pin Identification on the eZ80F91 Device (Continued)
PS019209-0504
LQFP
Pin #
63
64
65
66
67
68
69
70
71
72
Note: *PHY represents the physical layer of the OSI model.
BGA
Pin#
J7
K8
M9
H7
L9
J8
K9
M10
L10
M11
Symbol
RTC_V
V
HALT_SLP HALT and
TMS
TCK
TRIGOUT
TDI
TDO
TRST
V
SS
SS
DD
Function
Real-Time
Clock Power
Supply
Ground
SLEEP
Indicator
JTAG Test
Mode Select
JTAG Test
Clock
JTAG Test
Trigger Output
JTAG Test
Data In
JTAG Test
Data Out
JTAG Reset
Ground
P R E L I M I N A R Y
Signal Direction
Output, Active Low
Input
Input
Output
Bidirectional
Output
Schmitt-trigger input,
Active Low
Description
Power supply for the Real-Time
Clock and associated 32KHz
oscillator. Isolated from the power
supply to the remainder of the
chip. A battery can be connected
to this pin to supply constant
power to the Real-Time Clock
and 32KHz oscillator.
Ground.
A Low on this pin indicates that
the CPU has entered either HALT
or SLEEP mode because of
execution of either a HALT or
SLP instruction.
JTAG Mode Select Input.
JTAG and ZDI clock input.
Active High trigger event
indicator.
JTAG data input pin. Functions
as ZDI data I/O pin when JTAG is
disabled.
JTAG data output pin.
JTAG reset input pin.
Ground.
Product Specification
Architectural Overview
eZ80F91 MCU
16
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