- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄376966 > DS2250-8-16 Soft Microcontroller Module PDF資料下載
參數(shù)資料
| 型號： | DS2250-8-16 |
| 英文描述： | Soft Microcontroller Module |
| 中文描述： | 軟微控制器模塊 |
| 文件頁數(shù)： | 8/20頁 |
| 文件大?。?/td> | 594K |
| 代理商： | DS2250-8-16 |
DS2250(T)
8 of 20
COMMAND
FUNCTION
C
D
F
K
L
R
T
U
V
W
Z
P
G
Return CRC-16 checksum of embedded RAM
Dump Intel hex File
Fill embedded RAM block with constant
Load 40-bit encryption key
Load Intel hex file
Read MCON register
Trace (Echo) incoming Intel hex data
Clear Security Lock
Verify Embedded RAM with incoming Intel hex
Write MCON register
Set security lock
Put a value to a port
Get a value from a port
Table 1 summarizes the selection of the available Parallel Program Load cycles. The timing associated
with these cycles is illustrated in the electrical specs.
PARALLEL PROGRAM LOAD CYCLES
Table 1
MODE
RST
1
1
1
1
1
1
1
PSEN
0
0
X
0
0
0
0
PROG
0
0
X
0
1
0
1
EA
V
PP
V
PP
1
V
PP
1
V
PP
1
P2.7
1
1
0
0
0
0
0
P2.6
0
1
0
1
1
1
1
P2.5
X
X
X
0
0
1
1
Program
Security Set
Verify
Prog Expanded
Verify Expanded
Prog MCON or Key registers
Verify MCON registers
The Parallel Program cycle is used to load a byte of data into a register or memory location within the
DS2250(T). The Verify cycle is used to read this byte back for comparison with the originally loaded
value to verify proper loading. The Security Set cycle may be used to enable and the software security
feature. One may also enter bytes for the MCON register or for the five encryption registers using the
Program MCON cycle. When using this cycle, the absolute register address must be presented at Ports 1
and 2 as in the normal program cycle (Port 2 should be 00H). The MCON contents can likewise be
verified using the Verify MCON cycle.
When the DS2250(T) first detects a Parallel Program Strobe pulse or a Security Set Strobe pulse while in
the Program Load Mode following a power-on reset, the internal hardware of the device is initialized so
that an existing 4-kbyte program can be programmed into a DS2250(T) with little or no modification.
This initialization automatically sets the range address for 8 kbytes and maps the lowest 4-kbyte bank of
embedded RAM as program memory. The next 4 kbytes of embedded RAM are mapped as data memory.
In order to program more than 4 kbytes of program code, the Program/Verify Expanded cycles can be
used. Up to 32 kbytes of program code can be entered and verified. Note that the expanded 32 kbyte
Program/Verify cycles take much longer than the normal 4 kbyte Program/Verify cycles.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS2251T08-08 | Microcontroller |
| DS2251T08-12 | Microcontroller |
| DS2251T08-16 | Microcontroller |
| DS2251T128-08 | Microcontroller |
| DS2251T128-12 | Microcontroller |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS2250-8-8 | 制造商:Maxim Integrated Products 功能描述:SIPSTIK, MICRO 8KX8 8MHZ - Rail/Tube |
| DS2250T | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:Soft Microcontroller Module |
| DS2250T08-08 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| DS2250T08-12 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Microcontroller |
| DS2250T-08-16 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。