Rainbow Electronics LM80 - Manual (Page 10)

Functional Description
(Continued)
2.1 Internal Registers of the LM80
TABLE 1. The internal registers and their corresponding internal LM80 address is as follows:
Register LM80 Internal Hex
Address (This is the
data to be written to
the Address Register)
Power on
Value
Notes
Configuration Register 00h 0000 1000
Interrupt Status Register 1 01h 0000 0000
Interrupt Status Register 2 02h 0000 0000
Interrupt Mask Register 1 03h 0000 0000
Interrupt Mask Register 2 04h 0000 0000
Fan Divisor/RST_OUT/OS
Register 05h 0001 0100 FAN1 and FAN2 divisor = 2 (count of 153 =
4400 RPM)
OS/ Configuration and
Temperature Resolution
Register 06h 0000 0001
Value RAM 20h-3Fh
LM80
www.national.com 10