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PDF 83C51SL Data sheet ( Hoja de datos )

Número de pieza 83C51SL
Descripción KEYBOARD CONTROLLER
Fabricantes Intel 
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8XC51SL LOW VOLTAGE 8XC51SL
KEYBOARD CONTROLLER
80C51SL CPU with RAM and I O VCC e 5V g10%
81C51SL 16K ROM Preprogrammed with SystemSoft Keyboard Controller and Scanner
Firmware VCC e 5V g10%
83C51SL 16K Factory Programmed ROM VCC e 5V g10%
87C51SL 16K OTP ROM VCC e 5V g10%
Low Voltage 80C51SL CPU with RAM and I O VCC e 3 3V g0 3V
Low Voltage 81C51SL 16K ROM Preprogrammed with SystemSoft Keyboard Controller
and Scanner Firmware VCC e 3 3V g0 3V
Low Voltage 83C51SL 16K Factory Programmed ROM VCC e 3 3V g0 3V
Low Voltage 87C51SL 16K OTP ROM VCC e 3 3V g0 3V
Y Proliferation of 8051 Architecture
Y Complete 8042 Keyboard Control
Functionality
Y 8042 Style Host Interface
Y Optional Hardware Speedup of
GATEA20 and RCL
Y Local 16 x 8 Keyboard Switch Matrix
Support
Y Two Industry Standard Serial Keyboard
Interfaces Supported via Four High
Drive Outputs
Y 5 LED Drivers
Y Low Power CHMOS Technology
Y 4-Channel 8-Bit A D
Y Interface for up to 32 Kbytes of
External Memory
Y Slew Rate Controlled I O Buffers Used
to Minimize Noise
Y 256 Bytes Data RAM
Y Three Multifunction I O Ports
Y 10 Interrupt Sources with 6 User-
Definable External Interrupts
Y 2 MHz – 16 MHz Clock Frequency
Y 100-Pin PQFP (8XC51SL)
100-Pin SQFP (Low Voltage 8XC51SL)
The 8XC51SL based on Intel’s industry-standard MCS 51 microcontroller family is designed for keyboard
control in laptop and notebook PCs The highly integrated keyboard controller incorporates an 8042-style UPI
host interface with expanded memory keyboard scan and power management The 8XC51SL supports both
serial and scanned keyboard interfaces and is available in pre-programmed versions to reduce time to market
The Low Voltage 8XC51SL is the 3 3V version optimized for even further power savings Throughout the
remainder of this document both devices will generally be referred to as 51SL
The 8XC51SL is a pin-for-pin compatible replacement for the 8XC51SL-BG It does however have some
additional functionality Those additional functions are as follows
1 16K OTP ROM The 8XC51SL-BG had only 8K of ROM
2 New Register Set The 8XC51SL adds a second set of host interface registers available for use in support-
ing power management This required an additional address line (A1) for decoding To accommodate this
one VCC pin was removed However in order to maintain compatibility with the -BG version an enable bit
for this new register set was added in configuration register 1 This allows the 8XC51SL to be drop in
compatible to existing 8XC51SL-BG designs no software modifications required
NOTE
The changes made to the VCC pins require that all three VCC pins be properly connected Failing to do so
could result in high leakage current and possible damage to the device
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
November 1994
Order Number 272271-002

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83C51SL pdf
8XC51SL LOW VOLTAGE 8XC51SL
PIN DESCRIPTIONS (Continued)
Table 1 Pin Descriptions (Continued)
Symbol Type
Description
XTAL1
I Input to the on-chip oscillator
XTAL2
O Output from the on-chip oscillator
AVGND
Analog ground potential
AVREF
Analog supply voltage nominally a5V g10% for 8XC51SL a3 3V g0 3V for Low
Voltage 8XC51SL
AIN0 – 3
I A D Analog input channels
ADB0–7 I O External address data bus Multiplexes the low-address byte and data during external
memory accesses
EAL VPP I External address input When held high the 51SL CPU executes out of internal Program
Memory unless the program counter exceeds 3FFFH When held low the 51SL CPU
always executes out of external memory EAL is latched on the falling edge of RST This
pin also receives the programming supply voltage (VPP) during EPROM programming
ALE O Address Latch Enable output pulse latches the low address byte during external
memory access ALE is output at a constant rate of the oscillator frequency whether
or not there are accesses to external memory One ALE pulse is skipped during the
execution of a MOVX instruction ALE is disabled during Idle mode and can also be
disabled via Configuration register 1 control
PSENL
O Program Store Enable is the read strobe to external program memory PSENL is
qualified with RDL and A15 for use with an external Flash memory PSENL is not active
when the device executes out of internal program memory
MEMCSL I O External Memory Chip Select for code space address 4000H and above when EAL is
inactive (i e high) For EAL low MEMCSL is active Goes inactive during Idle mode and
Power-Down mode If external memory interfacing is not required MEMCSL can be
configured as a general purpose I O (controlled via Configuration register 1)
RST
I Resets the keyboard controller Hold RST high for two machine cycles
5

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83C51SL arduino
8XC51SL LOW VOLTAGE 8XC51SL
ELECTRICAL SPECIFICATIONS
ABSOLUTE MAXIMUM RATINGS
Ambient Temperature
Under Bias
b40 C to a85 C
Storage Temperature
b65 C to a150 C
Voltage on Any Pin to VSS
Power Dissipation
b0 5V to VCC a 0 5V
1 0W
This value is based on the maximum allowable die tem-
perature and the thermal resistance of the package
NOTICE This data sheet contains information on
products in the sampling and initial production phases
of development It is valid for the devices indicated in
the revision history The specifications are subject to
change without notice
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
OPERATING CONDITIONS
8XC51SL TA (Under Bias) e 0 C to a70 C VCC e a5V g 10% VSS e 0V
Low Voltage 8XC51SL TA (Under Bias) e 0 C to a70 C VCC e a3 3V g 0 3V VSS e 0V
8XC51SL DC Characteristics (Over Operating Conditions)
Symbol
Parameter
Min Max
VIL Input Low Voltage
(Except XTAL1 RST)
b0 5
08
VIL1 Input Low Voltage
(XTAL1 RST)
b0 5
0 2 VCC b 0 1
VIH Input High Voltage (Except EAL
24
PCDB0–7 ADB0–7 XTAL1 RST
CSL RDL WRL
LOADREN A0 A1)
VCC a 0 5
VIH1
VIH2
Input High Voltage (EAL)
Input High Voltage (PCDB0–7
ADB00-7 XTAL1 RST
CSL RDL WRL
LOADREN A0 A1)
VCC b 1 5
0 7 VCC
VCC a 0 5
VCC a 0 5
RP Internal Port Resistors KSI0 – 7
VOL Output Low Voltage
BP Pins(1) (Except P27 LED4)
5
b0 5
20
04
VOL1
Output Low Voltage
P27 LED4 LED0–3
b0 5
08
VOL2
QB Pins(2) PCDB0 – 7 RCL
ADB0–7 GATEA20 KSO0–15
MEMCSL ALE PSENL PCOBF
b0 5
04
VOH
Output High Voltage
QB Pins ALE PSENL PCOBF
2 4 VCC a 0 5
VOH1
Outut High Voltage
MEMCSL
PCDB0–7 ADB0–7
4 0 VCC a 0 5
VOH2
Output High Voltage
RCL GATEA20
4 0 VCC a0 5
Units
V
V
V
V
KX
V
V
V
V
V
V
Test Conditions
IOL e 16 mA
IOL e 12 mA
IOL e 4 mA
IOH e b60 mA
IOH e b2 0 mA
IOH e 60 mA
11

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