Rainbow Electronics LM80 - Manual (Page 22)

Functional Description
(Continued)
12.0 REGISTERS AND RAM
12.1 Address Register
The main register is the ADDRESS Register. The bit designations are as follows:
Bit Name Read/
Write
Description
7-0 Address
Pointer Read/Write Address of RAM and Registers. See the tables below for detail.
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Address Pointer (Power On default 00h)
A7 A6 A5 A4 A3 A2 A1 A0
12.2 Address Pointer Index (A7–A0)
Registers and RAM
A6–A0 in
Hex
Power On Value of Registers:
< 7:0 > in Binary
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 05h 0001 0100
OS
Configuration/Temperature
Resolution Register 06h 0000 0001
Value RAM 20h–3Fh
LM80
www.national.com 22