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參數(shù)資料
| 型號： | MC68HC705CL4FU |
| 廠商： | MOTOROLA INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 8-BIT, MROM, 1.84 MHz, MICROCONTROLLER, PQFP80 |
| 封裝： | QFP-80 |
| 文件頁數(shù)： | 11/101頁 |
| 文件大小： | 517K |
| 代理商： | MC68HC705CL4FU |
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February 12, 1997
GENERAL RELEASE SPECIFICATION
MC68HC05CL4
MEMORY
MOTOROLA
REV 2.0
2-1
SECTION 2
MEMORY
When the MC68HC05CL4 is in the Single-Chip Mode the 32 bytes of I/O,1K bytes
of user RAM, and 6K bytes of user ROM are all active as shown in Figure 2-1.
2.1
I/O AND CONTROL REGISTERS
The I/O and Control Registers reside in locations $0000-$001F. The overall orga-
nization of these registers is shown in Figure 2-1. The bit assignments for each
register are shown in Figure 2-2. Reading from unimplemented bits will return
unknown states, and writing to unimplemented bits will be ignored.
2.2
RAM
The total RAM consists of 1K bytes (including the stack) at locations $0050 thru
$044F. The stack begins at address $00FF and proceeds down to $00C0. The
stack pointer can access 64 locations from $00C0 to $00FF. Using the stack area
for data storage or temporary work locations requires care to prevent it from being
overwritten due to stacking from an interrupt or subroutine call.
2.3
ROM
There are a total of 6656 bytes of user ROM on chip. This includes 6144 bytes of
user ROM with locations $0800 thru $1FDF for user program storage and16 bytes
for user vectors at locations $1FF0 thru $1FFF. (There are 16 bytes reserved for
self-check program vectors, located at $1FE0-$1FEF.)
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