參數(shù)資料
型號: MC68HC05PD6
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP80
封裝: PLASTIC, TQFP-80
文件頁數(shù): 81/165頁
文件大?。?/td> 841K
代理商: MC68HC05PD6
GENERAL RELEASE SPECIFICATION
July 7, 1997
MOTOROLA
MEMORY
MC68HC05PD6
2-2
REV 1.1
2.2
ROM
The user ROM consists of 16K bytes of ROM from $1000 through $4FFF and 16
bytes of user vectors from $FFF0 through $FFFF. The Self-Check ROM is located
from $FE00 through $FFDF and Self-Check vectors are located from $FFE0
through $FFEF.
2.3
RAM
The user RAM consists of 512 bytes from $0040 to $023F. The stack pointer can
access 64 bytes of RAM from $00FF to $00C0. Using the stack area for data stor-
age or temporary work locations requires care to prevent it from being overwritten
due to stacking from an interrupt or subroutine call.
2.4
I/O AND CONTROL REGISTERS
There are two I/O memory map – Main I/O map and Option I/O map. The Main I/O
map is located at $0000-$003F and is accessible when OPTM bit in the MISC reg-
ister ($003E) is clear. The Option Map is located at $0000-$003F and is accessi-
ble when OPTM bit in the MISC register ($003E) is set. Figure 2-2 to Figure 2-9
show the two I/O mappings.
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