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PDF ( 数据手册 , 数据表 ) 87C51FA

零件编号 87C51FA
描述 CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
制造商 Intel Corporation
LOGO Intel Corporation LOGO 


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87C51FA 数据手册, 描述, 功能
87C51FA 87C51FB 87C51FC 87C51FC-20
CHMOS SINGLE-CHIP 8-BIT MICROCONTROLLER
Automotive
Y FX Core Architecture Device
Y Extended Automotive Temperature
Range (b40 C to a125 C Ambient)
Y Available in 12 MHz 16 MHz and
20 MHz Versions
Y High Performance CHMOS EPROM
Y Three 16-Bit Timer Counters
Timer 2 (Up Down Counter)
Y Programmable Counter Array with
High Speed Output
Compare Capture
Pulse Width Modulator
Watchdog Timer Capabilities
Y One-to-Three Level Program Lock
System on EPROM
Y 8K On-Chip User Programmable
EPROM in 87C51FA
Y 16K On-Chip User Programmable
EPROM in 87C51FB
Y 32K On-Chip User Programmable
EPROM in 87C51FC
Y 256 Bytes of On-Chip Data RAM
Y Quick Pulse Programming Algorithm
Y Boolean Processor
Y 32 Programmable I O Lines
Y 7 Interrupt Sources
Y Four Level Interrupt Priority
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 Fully Compatible Instruction
Set
Y Power Saving Idle and Power Down
Modes
Y ONCE (On-Circuit Emulation) Mode
Y RFI Reduction Mode
Y Available in PLCC and PDIP Packages
MEMORY ORGANIZATION
PROGRAM MEMORY Up to 8 Kbytes of the program memory can reside in the 87C51FA On-Chip EPROM
Up to 16 Kbytes of the program memory can reside in the 87C51FB on-chip EPROM Up to 32 Kbytes of the
program memory can reside in the 87C51FC on-chip EPROM 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 87C51FA 87C51FB 87C51FC is a single-chip control-oriented microcontroller which is fabricated on
Intel’s reliable CHMOS EPROM technology Being a member of the MCS-51 family the 87C51FB 87C51FC
uses the same powerful instruction set has the same architecture and is pin-for-pin compatible with the
existing MCS-51 family of products The 87C51FA is an enhanced version of the 87C51 The 87C51FB is an
enhanced version of the 87C51FA The 87C51FC is an enhanced version of the 87C51FB With 8 Kbytes of
program memory in the 87C51FA and 16 Kbytes of program memory in the 87C51FB and 32 Kbytes of
program memory in the 87C51FC it is 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
For the remainder of this document the 87F51FA 87C51FB and 87C51FC will be referred to as the
87C51FA FB FC
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
September 1993
Order Number 270961-003







87C51FA pdf, 数据表
AUTOMOTIVE 87C51FA FB FC FC-20
ABSOLUTE MAXIMUM RATINGS
Ambient Temperature Under Bias b40 C to a125 C
Storage Temperature
b65 C to a150 C
Voltage on EA VPP Pin to VSS
0V to a13 0V
Voltage on Any Other Pin to VSS b0 5V to a6 5V
IOL Per I O Pin
15 mA
Power Dissipation
1 5W
(Based on package heat transfer limitations not
device power consumption)
Typical Junction Temperature
a135 C
(Based on ambient temperature at a125 C)
Typical Thermal Resistance Junction-to-Ambient
(iJA)
PDIP
45 C W
PLCC
46 C W
NOTICE This data sheet contains information on
products in the sampling and initial production phases
of development The specifications are subject to
change without notice Verify with your local Intel
Sales office that you have the latest data sheet be-
fore finalizing a design
WARNING Stressing the device beyond the ‘‘Absolute
Maximum Ratings’’ may cause permanent damage
These are stress ratings only Operation beyond the
‘‘Operating Conditions’’ is not recommended and ex-
tended exposure beyond the ‘‘Operating Conditions’’
may affect device reliability
ADVANCED INFORMATION CONTACT INTEL FOR DESIGN-IN INFORMATION
DC CHARACTERISTICS (TA e b40 C to a125 C VCC e 5V g 20% VSS e 0V)
Symbol
Parameter
Min
Typ
(Note 4)
Max
Unit Test Conditions
VIL Input Low Voltage
VIL1 Input Low Voltage EA
VIH Input High Voltage
(Except XTAL1 RST EA)
b0 5
0
0 2 VCC a 0 9
0 2 VCC b 0 1
0 2 VCC b 0 3
VCC a 0 5
V
V
V
VIH1
VOL
Input High Voltage (XTAL1 RST)
Output Low Voltage (Note 5)
(Ports 1 2 and 3)
0 7 VCC
VOL1 Output Low Voltage (Note 5)
(Port 0 ALE PSEN)
VOH Output High Voltage
(Ports 1 2 and 3)
VOH1
Output High Voltage
(Port 0 in External Bus Mode
ALE PSEN)
IIL Logical 0 Input Current
(Ports 1 2 and 3)
VCC b 0 3
VCC b 0 7
VCC b 1 5
VCC b 0 3
VCC b 0 7
VCC b 1 5
VCC a 0 5
03
0 45
10
03
0 45
10
b75
V
V IOL e 100 mA (Note 1)
V IOL e 1 6 mA (Note 1)
V IOL e 3 5 mA (Note 1)
V IOL e 200 mA (Note 1)
V IOL e 3 2 mA (Note 1)
V IOL e 7 0 mA (Note 1)
V IOH e b10 mA
V IOH e b30 mA
V IOH e b60 mA
V IOH e b200 mA
V IOH e b3 2 mA
V IOH e b7 0 mA
mA VIN e 0 45V
ILI1 Input Leakage Current (Port 0)
ITL Logical 1 to 0 Transition Current
(Ports 1 2 and 3)
g 10
b750
mA 0 45V k VIN k VCC
mA VIN e 2V
RRST RST Pulldown Resistor
40
225 KX
CIO Pin Capacitance
10 pF 1 MHz 25 C
ICC Power Supply Current
Running at 16 20 MHz (Figure 6)
Idle Mode at 16 20 MHz (Figure 6)
Power Down Mode
26 28
5
15
35 40
12 14
100
(Note 3)
mA
mA
mA
8







87C51FA equivalent, schematic
AUTOMOTIVE 87C51FA FB FC FC-20
EPROM Program Lock
The 87C51FA FB FC program lock system when
programmed protects the onboard program against
software piracy
The 87C51FA FB FC has a 3-level program lock
system and a 64-byte encryption array Since this is
an EPROM device all locations are user program-
mable See Table 4
Program Lock Bits
The 87C51FA FB FC has 3 programmable lock bits
that when programmed according to Table 4 will
provide different levels of protection for the on-chip
code and data
Erasing the EPROM also erases the encryption ar-
ray and the program lock bits returning the part to
full functionality
Encryption Array
Within the EPROM array are 64 bytes of Encryption
Array that are initially unprogrammed (all 1’s) Every
time that a byte is addressed during a verify 6 ad-
dress lines are used to select a byte of the Encryp-
tion Array This byte is then exclusive-NOR’ed
(XNOR) with the code byte creating an Encryption
Verify byte The algorithm with the array in the un-
programmed state (all 1’s) will return the code in it’s
original unmodified form For programming the En-
cryption Array refer to Table 3 (EPROM Program-
ming Mode)
Reading the Signature Bytes
The 87C51FA FB FC has 3 signature bytes in loca-
tions 30H 31H and 60H To read these bytes follow
the procedure for EPROM verify but activate the
control lines provided in Table 3 for Read Signature
Byte
Location 30H e 89H
31H e 58H
60H e FBH (for an FB part)
60H e FCH (for an FC part)
Table 4 Program Lock Bits and the Features
Program Lock Bits
LB1 LB2 LB3
Protection Type
1 U U U No Program Lock features enabled (Code verify will still be encrypted by the
Encryption Array if programmed )
2 P U U MOVC instructions executed from external program memory are disabled
from fetching code bytes from internal memory EA is sampled and latched on
Reset and further programming of the EPROM is disabled
3 P P U Same as 2 also verify is disabled
4 P P P Same as 3 also external execution is disabled
Any other combination of the lock bits is not defined
16










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