80C51SL.pdf 데이터시트 (총 23 페이지) - 파일 다운로드 80C51SL 데이타시트 다운로드

No Preview Available !

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

No Preview Available !

8XC51SL LOW VOLTAGE 8XC51SL
Figure 1 Block Diagram
272271 – 1
2

No Preview Available !

8XC51SL LOW VOLTAGE 8XC51SL
Figure 2 Connection Diagram (PQFP and SQFP)
PACKAGES
Part
8XC51SL
Low Voltage 8XC51SL
Prefix
KU
SB
Suffix
AH
AL
Package Type
100-Pin PQFP
100-Pin SQFP
272271 – 2
3