DS80C320-ENG datasheet(41/175 Pages) DALLAS

tên linh kiện	DS80C320-ENG

Giải thích chi tiết về linh kiện	High-Speed Microcontroller User Guide

PDF	175 Pages

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nhà sản xuất	DALLAS [Dallas Semiconductor]

Trang chủ	https://www.maximintegrated.com/en.html

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41 / 175 page

High-Speed Microcontroller User’s Guide

41 of 175

ROM Size Select (ROMSIZE)

SFR C2h

RS2

RS1

RS0

RT-1

RT-0

RT-1

R=Unrestricted Read, W=Unrestricted Write, -n=Value after Reset

Bits 7-3

These bits are reserved. Read data is indeterminate.

ROMSIZE.2-0

Bits 2-0

ROM Size Select 2-0. This register is used to select the maximum on-chip

decoded address for ROM. Care must be taken that the memory location of the

current program counter will be valid both before and after modification. These

bits can only be modified using a timed access procedure. The EA

pin will

override the function of these bits when asserted, forcing the device to access

external program memory only.

Configuring this register to a setting that

exceeds the maximum amount of internal memory may corrupt device operation.

These bits will default on reset to the maximum amount of internal program

memory (i.e., 16K for DS87C520).

RS2

RS1

RS0

MAXIMUM ON-CHIP ROM ADDRESS

0KB/Disable on-chip ROM

1KB/03FFh

2KB/07FFh

4KB/0FFFh

8KB/1FFFh

16KB/3FFFh

132KB/7FFFh

64KB/FFFFh

DS80C320-ENG bảng dữ liệu(PDF) 41 Page - Dallas Semiconductor