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81C51SL Schematic ( PDF Datasheet ) - Intel

Teilenummer 81C51SL
Beschreibung KEYBOARD CONTROLLER
Hersteller Intel
Logo Intel Logo 




Gesamt 23 Seiten
81C51SL Datasheet, Funktion
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






81C51SL Datasheet, Funktion
8XC51SL LOW VOLTAGE 8XC51SL
8XC51SL LOW VOLTAGE 8XC51SL PIN CHARACTERISTICS
Pin No
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
Pin Name
KSO0
KSO1
KSO2
KSO3
KSO4
KSO5
KSO6
KSO7
KSO8
KSO9
KSO10
KSO11
VSS
VCC
KSO12
KSO13
KSO14
KSO15
KSI0
KSI1
KSI2
KSI3
KSI4
KSI5
KSI6
KSI7
ALE
MEMCSL
PSENL
P10 A0
P11 A1
P12 A2
P13 A3
P14 A4
P15 A5
P16 A6
P17 A7
Table 2 Pin Characteristics
Type
Term
O OD
O OD
O OD
O OD
O OD
O OD
O OD
O OD
O OD
O OD
O OD
O OD
Reset
TRI
TRI
TRI
TRI
TRI
TRI
TRI
TRI
TRI
TRI
TRI
TRI
O OD
TRI
O OD
TRI
O OD
TRI
O OD
L
I 5K – 20K PU
I 5K – 20K PU
I 5K – 20K PU
I 5K – 20K PU
I 5K – 20K PU
I 5K – 20K PU
I 5K – 20K PU
I 5K – 20K PU
OL
O L (EAL e 0)
OL
I O PU
WH
I O PU
WH
I O PU
WH
I O PU
WH
I O PU
WH
I O PU
WH
I O PU
WH
I O PU
WH
PD Mode
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
NC
NC
NC
NC
NC
NC
NC
NC
L
H
L
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
HOLD
6

6 Page









81C51SL pdf, datenblatt
8XC51SL LOW VOLTAGE 8XC51SL
8XC51SL DC Characteristics (Over Operating Conditions) (Continued)
Symbol
Parameter
Min Max Units
IIL Logical 0 Input Current
QB(2) Pins
b50
mA
ILI Input Leakage Current
(BP and Pure Input Pins
except for KSI0–7 XTAL1 and EAL)
g10
mA
ITL Logical 1 to 0 Transition
Current QB(2) Pins
b1 mA
ICC Power Supply Current
Active Mode at 16 MHz
Idle Mode at 16 MHz
Power-Down Mode
38
15
TBD
mA
mA
mA
Test Conditions
VIN e 0 4V
0 k VIN k VCC
VIN e 2 0V
Low Voltage 8XC51SL DC Characteristics (Over Operating Conditions)
Symbol
Parameter
Min
Max
Units
VIL Input Low Voltage
(Except XTAL1 RST KSI0–7)
b0 5
08 V
VIL1 Input Low Voltage
(XTAL1 RST)
b0 5
0 2 VCC b 0 1
VIL2 Input Low Voltage (KSI0 – 7)
VIH Input High Voltage (Except EAL
PCDB0–7 ADB0–7 XTAL1 RST)
P30 P31 P33 P35)
b0 5
20
06
VCC a 0 5
V
VIH1
VIH2
Input High Voltage (EAL)
Input High Voltage (PCDB0–7
ADB0–7 XTAL1 RST)
VCC b 1
0 7 VCC
VCC a 0 5
VCC a 0 5
V
V
VIH3
Input High Voltage
(P30 P31 P33 P35)
20 55 V
RP Internal Port Resistors KSI0 – 7
VOL Output Low Voltage
BP Pins(1) (Except P27 LED4)
5
b0 5
20 KX
04 V
VOL1
Output Low Voltage
P27 LED4 LED0–3
b0 5
08 V
VOL2
Output Low Voltage
QB Pins(2) PCDB0 – 7 RCL
ADB0–7 GATEA20 KSO0–15
MEMCSL ALE PSENL PCOBF
b0 5
04 V
VOH Output High Voltage
QB Pins ALE PSENL PCOBF
VCC b 0 7 VCC a 0 5
V
VOH1
Output High Voltage
MEMCSL
PCDB0–7 ADB0–7
24
VCC a 0 5
V
VOH2
Output High Voltage
RCL GATEA20
24
VCC a0 5
V
IIL Logical 0 Input Current
QB(2) Pins
b50
mA
ILI Input Leakage Current
(BP and Pure Input Pins
except for KSI0–7 XTAL1 and EAL)
g10
mA
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
VIN e 0 4V
0 k VIN k VCC
12

12 Page





SeitenGesamt 23 Seiten
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