8XC51SL - Intel Corporation

8XC51SL LOW VOLTAGE 8XC51SL KEYBOARD CONTROLLER

Table 1 Pin Descriptions Symbol VSS VCC PCDB0–7 WRL RDL CSL A0–A1 PCOBF GATEA20 RCL PROGL LED0–3 KSI0–7 KSO0–15 PORT 1 P10 A0– P17 A7 LOADREN PORT2 P20–6 A8–14 P27 LED4 PORT 3 I O I I O I O I I I I O O O O I O I O Type Circuit ground potential Supply voltage during normal Idle and Power-Down operation nominally a 5V g 10% for 8XC51SL a 3 3V g 0 3V for Low V.

Features

fers Used to Minimize Noise 256 Bytes Data RAM Three Multifunction I O Ports 10 Interrupt Sources with 6 UserDefinable External Interrupts 2 MHz
  –16 MHz Clock Frequency 100-Pin PQFP (8XC51SL) 100-Pin SQFP (Low Voltage 8XC51SL) Y Y Y Y Y Y Y Y Y Y Y Y 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 interfa.