參數(shù)資料
型號: P89C557E4EFB
廠商: NXP SEMICONDUCTORS
元件分類: 微控制器/微處理器
英文描述: Single-chip 8-bit microcontroller
中文描述: 8-BIT, FLASH, 16 MHz, MICROCONTROLLER, PQFP80
封裝: 14 X 20 MM, 2.70 MM HEIGHT, PLASTIC, SOT-318-1, QFP-80
文件頁數(shù): 53/72頁
文件大?。?/td> 374K
代理商: P89C557E4EFB
Philips Semiconductors
Product specification
P83C557E4/P80C557E4/P89C557E4
Single-chip 8-bit microcontroller
1999 Mar 02
53
Figure 48. Program memory map and operation modes
*
In the program execution between 63k and 64k setting of UBS bits is not allowed.
USER MODE
BOOT MODE
RST
PSEN
ALE/WE
EA
internal
external
Start at 0000H in user program
Start in BOOTROM
UBS1, UBS0 0,0 1,1
External
Program
Memory
(EA = 0)
External
Program
Memory
(EA = X)
Internal
Program
Memory
(EA = 1)
Security
Byte
BOOTROM
0,0
0,1
64 K
63 K
32 K
7FFFH
0
0
64 K
63 K
32 K
X,X
= UBS1, UBS0
User-Boot selection bits in FMCON
High Level
Low Level
External
Program
Memory
(EA = 0)
External
Program
Memory
(EA = X)
Security
Byte
Internal
Program
Memory
(EA = 1)
*
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