參數(shù)資料
型號(hào)： HPC26003
廠商： National Semiconductor Corporation
英文描述： High-Performance microControllers
中文描述： 高性能微控制器
文件頁(yè)數(shù)： 17/36頁(yè)
文件大小： 467K
代理商： HPC26003
HPC16003 Operating Modes
EXPANDED ROMLESS MODE (HPC16003)
Because the HPC16003 has no on-chip ROM, it has only
one mode of operation, the Expanded ROMless Mode. The
EXM pin must be pulled high (logic ‘‘1’’) on power up, the
EA bit in the PSW register should be set to a ‘‘1’’. The
HPC16003 is a ROMless device and is intended for use with
external memory. The external memory may be any combi-
nation of ROM and RAM. Up to 64k bytes of external mem-
ory may be accessed. It is necessary to vector on reset to
an address between F000 and FFFF, therefore the user
should have external memory at these addresses. The EA
bit in the PSW register must immediately be set to ‘‘1’’ at the
beginning of the user’s program to disable illegal address
detection in the WATCHDOG logic.
TABLE II. HPC16003 Operating Modes
Operating
Mode
EXM
Pin
EA
Bit
Memory
Configuration
Expanded ROMless
1
1
0200:FFFF off-chip
Note:
The on-chip RAM and Registers (0000:01FF) of the HPC16003 may
be accessed at all times.
TL/DD/8801–17
FIGURE 15. Single-Chip Mode
TL/DD/8801–18
FIGURE 16. 8-Bit External Memory
17
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參數(shù)描述
HPC26003E17 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microcontroller
HPC26003E20 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microcontroller
HPC26003E30 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microcontroller
HPC26003EL20 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microcontroller
HPC26003EL30 制造商:未知廠家 制造商全稱:未知廠家 功能描述:16-Bit Microcontroller
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