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参数资料
| 型号： | MC68HC11C0FN3 |
| 厂商： | MOTOROLA INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, 3 MHz, MICROCONTROLLER, PQCC68 |
| 封装： | PLASTIC, LCC-68 |
| 文件页数： | 13/76页 |
| 文件大小： | 394K |
| 代理商： | MC68HC11C0FN3 |
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MOTOROLA
MC68HC11C0
20
MC68HC11C0TS/D
Since the translation is performed as a two's complement operation the following calculation is per-
formed:
Thus, MXHADR/MXLADR must contain the value $040 to cause the external 20-Kbyte page beginning
at $0A000 to appear in the memory expansion window.
Figure 7 Memory Expansion Address Translation Example (256K Mode)
Although there are three expansion modes, the manner in which the expansion address is defined is
identical. Each of the memory expansion modes has a slightly different formula for calculating the ex-
pansion address. They are defined as follows:
64K Expansion Mode:
XA[15:10] = MA[15:10] – PSA[15:10]; XA[17:16] are not used
128K Expansion Mode:
XA[16:10] = MA[16:10] – PSA[15:10]; XA17 is not used
17
16 15
12 11
8
7
4
3
0
1
0
1
0
x
MA[17:10]
$0A0
x
0
1
0
x
–PSA[15:10]
–$60
0
1
0
XA[17:10]
$040
00000
05000
0A000
PAGE 1 — 20K
PAGE 2 — 20K
PAGE 0 — 20K
3C000
PAGE 12 — 20K
3D000
4K
3FFFF
12K
0F000
$0000
$0400
$04FF
B000
FFFF
256 BYTES RAM
8K
VECTOR CODE — 12K
REGISTER BLOCK — 128
$6000
BANK WINDOW — 20K
(PSA[15:10] = $60)
(PEA[15:10] = $B0)
D000
– – – – – – 0 0
0 1 0 0 0 0 0 0
MXHADR
MXLADR
ADDR[15:0] = $7245
(% 0111001001000101)
XA[17:10] = $040
(% 00010000)
NEW ADDR[17:0] = $0B245
(% 001011001001000101)
OVERLAP WITH
VECTOR CHIP SELECT
EXTERNAL 256-KBYTE
MEMORY DEVICE
MCU 64-KBYTE
ADDRESS SPACE
MEMORY EXPANSION
ADDRESS REGISTERS
$007F
MXHADR = $00
(XA[17:16])
MXLADR = $40
(XA[15:10])
PGSADR = $60
(PSA[15:10])
PGEADR = $B0
(PEA[15:10])
VCSADR = $D0
(VA[15:10])
PGEN0 = 1
AFFF
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相关代理商/技术参数 |
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|---|---|
| MC68HC11C0FU3 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller |
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| MC68HC11C0VFN2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller |
| MC68HC11C0VFU2 | 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:8-Bit Microcontroller |
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