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| 型号： | MTA85812S-10I/SS |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, OTPROM, 10 MHz, RISC MICROCONTROLLER, PDSO20 |
| 封装： | 0.209 INCH, PLASTIC, SSOP-20 |
| 文件页数： | 34/72页 |
| 文件大小： | 760K |
| 代理商： | MTA85812S-10I/SS |
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MTA85XXX
DS40115C-page 4
1995 Microchip Technology Inc.
1.0
GENERAL DESCRIPTION
The MTA85XXX devices from Microchip Technology
Inc. are a family of multi-chip products which offer a
unique combination of EPROM-based Microcontrollers
and Serial EEPROM data memory in a single package.
The MTA85XXX line features the PIC16C5XA family of
Microcontrollers combined with Microchip’s 24LC0XB
family of Serial EEPROMs.
The Microcontroller and Serial EEPROM portions of
these multi-chip devices are equivalent to their
respective individual components chips, except for the
electrical specifications on shared pins. Please refer to
the datasheets of the component die for information on
each device’s architecture, functionality, and other
important user information.
Two unique pinouts are available in this family of
devices,
regardless
of
which
combination
of
component
chips
are
used.
The
first
pinout
(MTA85X0X series) features shared power and ground
pins for the Microcontroller and Serial EEPROM. All
other Microcontroller and Serial EEPROM pins are
electrically independent. The second available pinout
(MTA85X1X series) features Microcontroller control of
the Serial EEPROM VDD. This allows the Serial
EEPROM to be powered down when going into a
standby mode. This is often desirable in power con-
scious applications to reduce current when the Serial
EEPROM is not being accessed. In this configuration
the Microcontroller I/O pin RB7 is used to supply power
to the Serial EEPROM. It is the user’s responsibility to
ensure that RB7 is driving a '1' while the Serial
EEPROM is being used.
The MTA85XXX devices are supported by an in-circuit
emulator, an assembler, and a production quality
programmer. All tools are supported by IBM PC and
compatible machines.
1.1
Applications
The MTA85XXX family is ideally suited to a wide variety
of applications including, but not limited to: keyless
entry, remote control, smart cards and automotive
controllers. The EPROM program memory makes
customization
of
application
programs
fast
and
convenient. The EEPROM data memory is ideal for
storing configuration information, access codes, serial
numbers, and adaptive look-up tables. The small
footprint package makes the MTA85XXX devices
perfect for applications with physical space limitations.
This small size coupled with the low-cost, low-power,
wide voltage range, and high performance of this
flexible family of devices makes the MTA85XXX the
microcontroller of choice for
a wide variety of
applications which utilize EEPROM memory.
1.2
MTA85XXX Series Overview
A variety of EPROM program memory sizes, EEPROM
data
memory
sizes
and
frequency
ranges
are
available. Depending on the application and production
requirements, the proper device option can be selected
using the information in Table 1-1 and Table 1-2. When
placing orders, please use the “MTA85XXX Product
Identification System” on the back page of this data
sheet to specify the correct part.
TABLE 1-1:
FAMILY OVERVIEW
Part Number
Microcontroller
SEE
PGM EPROM
EEPROM
RAM
I/O
MTA85401
PIC16C54A
24LC01B
512 x 12
128 x 8
32 x 8
12
MTA85402
PIC16C54A
24LC02B
512 x 12
256 x 8
32 x 8
12
MTA85411
PIC16C54A
24LC01B
512 x 12
128 x 8
32 x 8
12
note 1
MTA85412
PIC16C54A
24LC02B
512 x 12
256 x 8
32 x 8
12
note 1
MTA85801
PIC16C58A
24LC01B
2048 x 12
128 x 8
80 x 8
12
MTA85802
PIC16C58A
24LC02B
2048 x 12
256 x 8
80 x 8
12
MTA85811
PIC16C58A
24LC01B
2048 x 12
128 x 8
80 x 8
12
note 1
MTA85812
PIC16C58A
24LC02B
2048 x 12
256 x 8
80 x 8
12
note 1
Note:
RB7 dedicated to SEE VDD
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