參數(shù)資料
型號(hào)： MCHC11F1CFNE4R
廠商： Freescale Semiconductor
文件頁數(shù)： 95/158頁
文件大小： 0K
描述： IC MCU 8BIT 1K RAM 68-PLCC
標(biāo)準(zhǔn)包裝： 250
系列： HC11
核心處理器： HC11
芯體尺寸： 8-位
速度： 4MHz
連通性： SCI，SPI
外圍設(shè)備： POR，WDT
輸入/輸出數(shù)： 30
程序存儲(chǔ)器類型： ROMless
EEPROM 大?。?/td> 512 x 8
RAM 容量： 1K x 8
電壓 - 電源 (Vcc/Vdd)： 4.75 V ~ 5.25 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x8b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 68-LCC（J 形引線）
包裝： 帶卷 (TR)
OPERATING MODES AND ON-CHIP MEMORY
TECHNICAL DATA
4-3
4.2.2 Memory Map
Figure 4-1 MC68HC11F1 Memory Map
4.2.2.1 RAM
The MC68HC11F1 microcontroller has 1024 bytes of fully static RAM that can be used
for storing instructions, variables, and temporary data during program execution. RAM
can be placed at any 4-Kbyte boundary in the 64 Kbyte address space by writing an
appropriate value to the INIT register.
RAM is initially located at $0000 in the memory map upon reset. Direct addressing
mode can access the first 256 locations of RAM using a one-byte address operand.
Direct mode accesses save program memory space and execution time.
The on-chip RAM is a fully static memory. RAM contents can be preserved during pe-
riods of processor inactivity by either of two methods, both of which reduce power con-
sumption.
NOTES:
1. RAM can be remapped to any 4-Kbyte boundary ($x000). "x" represents the value contained in
RAM[3:0] in the init register.
2. The register block can be remapped to any 4-Kbyte boundary ($y000). "y" represents the value contained in
reg[3:0] in the init register.
3. Special test mode vectors are externally addressed.
4. In special test mode the address locations $zD00–$zDFF are not externally addressable.
"z" represents the value of bits EE[3:0] in the config register.
5. EEPROM can be remapped to any 4-Kbyte boundary ($z000). "z" represents the value contained in
EE[3:0] in the config register.
zE00
EXPANDED
512 BYTES EEPROM 5
FFC0
FFFF
NORMAL MODE
INTERRUPT
VECTORS
1024 BYTES RAM 1
SINGLE
CHIP
BOOTSTRAP
SPECIAL
TEST
EXT
$0000
$1000
$FFFF
x000
y000
y05F
BF00
zFFF
BFC0
BFFF
SPECIAL MODE 3
INTERRUPT
VECTORS
EXT
x3FF
96-BYTE REGISTER BLOCK 2
$FE00
256 BYTES BOOTSTRAP ROM
zD00
256 BYTES RESERVED 4
(SPECIAL TEST MODE ONLY)
zDFF
EXT
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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