EZ80F91MCU ZILOG [Zilog, Inc.], EZ80F91MCU Datasheet - Page 31

• 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 #
34
35
36
37
38
39
40
41
42
Note: *PHY represents the physical layer of the OSI model.
BGA
Pin#
K1
K2
L1
M1
M2
L2
K3
J4
M3
Symbol
CS1
CS2
CS3
V
V
DATA0
DATA1
DATA2
DATA3
DD
SS
Function
Chip Select 1
Chip Select 2
Chip Select 3
Power Supply
Ground
Data Bus
Data Bus
Data Bus
Data Bus
P R E L I M I N A R Y
Signal Direction
Output, Active Low
Output, Active Low
Output, Active Low
Bidirectional
Bidirectional
Bidirectional
Bidirectional
Description
CS1 Low indicates that an access
is occurring in the defined CS1
memory or I/O address space.
CS2 Low indicates that an access
is occurring in the defined CS2
memory or I/O address space.
CS3 Low indicates that an access
is occurring in the defined CS3
memory or I/O address space.
Power Supply.
Ground.
The data bus transfers data to
and from I/O and memory
devices. The eZ80F91 drives
these lines only during Write
cycles when the eZ80F91 is the
bus master.
The data bus transfers data to
and from I/O and memory
devices. The eZ80F91 drives
these lines only during Write
cycles when the eZ80F91 device
is the bus master.
The data bus transfers data to
and from I/O and memory
devices. The eZ80F91 drives
these lines only during Write
cycles when the eZ80F91 is the
bus master.
The data bus transfers data to
and from I/O and memory
devices. The eZ80F91 drives
these lines only during Write
cycles when the eZ80F91 is the
bus master.
Product Specification
Architectural Overview
eZ80F91 MCU
12