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LP80C51FA の電気的特性と機能
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LP80C51FAのメーカーはIntel Corporationです、この部品の機能は「(LP80C51FA / LP83C51FA) EVENT-CONTROL CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER」です。 |
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製品の詳細 ( Datasheet PDF )
| 部品番号 LP80C51FA |
| 部品説明 (LP80C51FA / LP83C51FA) EVENT-CONTROL CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER |
| メーカ Intel Corporation |
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このページの下部にプレビューとLP80C51FAダウンロード（pdfファイル）リンクがあります。 Total 13 pages |
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www.DataSheet4U.com
80C51FA 83C51FA
EVENT-CONTROL CHMOS SINGLE-CHIP
8-BIT MICROCONTROLLER
Automotive
Y Extended Automotive
Temperature Range
(b40 C to a125 C Ambient)
Y High Performance CHMOS Process
Y Three 16-Bit Timer Counters
Timer 2 is an Up Down
Timer Counter
Y Programmable Counter Array with
High Speed Output
Compare Capture
Pulse Width Modulator
Watchdog Timer Capabilities
Y 8K On-Chip ROM
Y 256 Bytes of On-Chip Data RAM
Y Boolean Processor
Y 32 Programmable I O Lines
Y 7 Interrupt Sources
Y Programmable Serial Channel with
Framing Error Detection
Automatic Address Recognition
Y TTL and CMOS Compatible Logic
Levels
Y 64K External Program Memory Space
Y 64K External Data Memory Space
Y MCS 51 Microcontroller Fully
Compatible Instruction Set
Y Power Saving Idle and Power Down
Modes
Y ONCE (On-Circuit Emulation) Mode
Y Available in PLCC and PDIP Packages
(See Packaging Specification Order 231369)
Y Available in 12 MHz and 16 MHz
Versions
MEMORY ORGANIZATION
PROGRAM MEMORY Up to 8 Kbytes of the program memory can reside in the on-chip ROM In addition the
device can address up to 64K of program memory external to the chip
DATA MEMORY This microcontroller has a 256 x 8 on-chip RAM In addition it can address up to 64 Kbytes of
external data memory
The Intel 80C51FA 83C51FA is a single-chip control oriented microcontroller which is fabricated on Intel’s
CHMOS III (83C51FA) ROM technology For the remainder of this datasheet references to the ROMless
(80C51FA) and ROM (83C51FA) versions will be denoted as 83C51FA Being a member of the MCS 51
microcontroller family the 83C51FA uses the same powerful instruction set has the same architecture and is
pin-for-pin compatible with the existing MCS 51 microcontroller products The 83C51FA is an enhanced
version of the 87C51 It’s added features make it an even more powerful microcontroller for applications that
require Pulse Width Modulation High Speed I O and up down counting capabilities such as brake and
traction control It also has a more versatile serial channel that facilitates multi-processor communications
NOTICE
This datasheet contains information on products in full production Specifications within this datasheet
are subject to change without notice Verify with your local Intel sales office that you have the latest
datasheet before finalizing a design
Other brands and names are the property of their respective owners
Information in this document is provided in connection with Intel products Intel assumes no liability whatsoever including infringement of any patent or
copyright for sale and use of Intel products except as provided in Intel’s Terms and Conditions of Sale for such products Intel retains the right to make
changes to these specifications at any time without notice Microcomputer Products may have minor variations to this specification known as errata
COPYRIGHT INTEL CORPORATION 1995
February 1995
Order Number 270501-007
1 Page
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AUTOMOTIVE 80C51FA 83C51FA
80C51FA 83C51FA PRODUCT
OPTIONS
Intel’s extended and automotive temperature range
products are designed to meet the needs of those
applications whose operating requirements exceed
commercial standards
With the commercial standard temperature range
operational characteristics are guaranteed over the
temperature range of 0 C to 70 C ambient With the
extended temperature range option operational
characteristics are guaranteed over the temperature
range of b40 C to a85 C ambient For the automo-
tive temperature range option operational charac-
teristics are guaranteed over the temperature range
of b40 C to a125 C ambient
As shown in Figure 2 temperature burn-in and
package options are identified by a one- or two-letter
prefix to the part number
270501 – 2
Example
AN83C51FA indicates an automotive temperature range version of the 83C51FA in a PLCC package with 8 Kbyte ROM
program memory
Figure 2 MCS 51 Microcontroller Product Family Nomenclature
Temperature
Classification
Extended
Automotive
Table 1 Temperature Options
Temperature
Designation
Operating
Temperature
C Ambient
T b40 to a85
L b40 to a85
A b40 to a125
B b40 to a125
Burn-In
Options
Standard
Extended
Standard
Extended
3
3Pages
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AUTOMOTIVE 80C51FA 83C51FA
270501 – 6
Figure 5 External Clock Drive Configuration
IDLE MODE
The user’s software can invoke the Idle Mode When
the microcontroller is in this mode power consump-
tion is reduced The Special Function Registers and
the onboard RAM retain their values during Idle but
the processor stops executing instructions Idle
Mode will be exited if the chip is reset or if an en-
abled interrupt occurs The PCA timer counter can
optionally be left running or paused during Idle
Mode
restored to its normal operating level and must be
held active long enough for the oscillator to restart
and stabilize (normally less than 10 ms)
With an external interrupt INT0 or INT1 must be en-
abled and configured as level-sensitive Holding the
pin low restarts the oscillator but bringing the pin
back high completes the exit Once the interrupt is
serviced the next instruction to be executed after
RETI will be the one following the instruction that put
the device into Power Down
DESIGN CONSIDERATION
When the Idle mode is terminated by a hardware
reset the device normally resumes program execu-
tion from where it left off up to two machine cycles
before the internal reset algorithm takes control On-
chip hardware inhibits access to internal RAM in this
event but access to the port pins is not inhibited To
eliminate the possibility of an unexpected write when
Idle is terminated by reset the instruction following
the one that invokes Idle should not be one that
writes to a port pin or to external memory
POWER DOWN MODE
To save even more power a Power Down mode can
be invoked by software In this mode the oscillator
is stopped and the instruction that invoked Power
Down is the last instruction executed The on-chip
RAM and Special Function Registers retain their val-
ues if the Power Down mode is terminated with an
interrupt
On the 83C51FA either a hardware reset or external
interrupt can cause an exit from Power Down Reset
redefines all the SFRs but does not change the on-
chip RAM An external interrupt allows both the
SFRs and the on-chip RAM to retain their values
To properly terminate Power Down the reset or ex-
ternal interrupt should not be executed before VCC is
ONCE MODE
The ONCE (‘‘On-Circuit Emulation’’) Mode facilitates
testing and debugging of systems using the
83C51FA without the 83C51FA having to be re-
moved from the circuit The ONCE Mode is invoked
by
1) Pull ALE low while the device is in reset and
PSEN is high
2) Hold ALE low as RST is deactivated
While the device is in ONCE Mode the Port 0 pins
float the other port pins and ALE and PSEN are
weakly pulled high The oscillator circuit remains ac-
tive While the 83C51FA is in this mode an emulator
or test CPU can be used to drive the circuit Normal
operation is restored when a normal reset is applied
Mode
Idle
Idle
Power Down
Power Down
Table 2 Status of the External Pins during Idle and Power Down
Program
Memory
ALE
PSEN
PORT0
PORT1
PORT2
Internal
1
1
Data
Data
Data
External
1
1
Float
Data
Address
Internal
0
0
Data
Data
Data
External
0
0
Float
Data
Data
PORT3
Data
Data
Data
Data
NOTE
For more detailed information on the reduced power modes refer to current Embedded Applications Handbook and Applica-
tion Note AP-252 ‘‘Designing with the 80C51BH ’’
6
6 Page
合計 : 13 ページ |
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| 部品番号 | 部品説明 | メーカ |
| LP80C51FA | (LP80C51FA / LP83C51FA) EVENT-CONTROL CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER | Intel Corporation |