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參數(shù)資料
| 型號： | DS87C550 |
| 英文描述： | EPROM High-Speed Micro with A/D and PWM |
| 中文描述： | 存儲器高速微與A / D及PWM |
| 文件頁數(shù)： | 31/50頁 |
| 文件大?。?/td> | 763K |
| 代理商： | DS87C550 |
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DS87C550
31 of 50
apply addresses in demultiplexed fashion to Ports 1 and 2 with data on Port 0. Waveforms and timing are
provided in the Electrical Specifications.
Program the DS87C550 as follows:
1.
Apply the address value.
2.
Apply the data value.
3.
Select the programming option from Table 10 using the control signals.
4.
Increase the voltage on V
PP
from 5V to 12.75V if writing to the EPROM.
5.
Pulse the
PROG
signal 5 times for EPROM array and 25 times for encryption table, lock bits, and
other EPROM bits.
6.
Repeat as many times as necessary.
EPROM PROGRAMMING MODES
Table 10
MODE
RST
H
PSEN
L
ALE/
PROG
PL5*
EA/
V
PP
12.75
V
H
12.75
V
12.75
V
12.75
V
12.75
V
12.75
V
H
P2.6
L
P2.7
H
P3.3
H
P3.6
H
P3.7
H
Program Code Data
Verify Code Data
Program Encryption Array
Address 0-3Fh
H
H
L
L
H
L
L
L
H
L
H
H
L
H
H
PL25*
Program Lock Bits
LB1
H
L
PL25*
H
H
H
H
H
LB2
H
L
PL25*
H
H
H
L
L
LB3
H
L
PL25*
H
L
H
H
L
Program Option Register
Address FCh
Read Signature or Option
Register 30, 31, 60, FCh
*PLn indicates pulse to a logic low n times
H
L
PL25*
L
H
H
L
L
H
L
H
L
L
L
L
L
EPROM LOCK BITS
Table 11
Level
Lock Bits
LB1
LB2
1
U
Protection
LB3
U
U
No program lock. Encrypted; verify if Encryption table was programmed.
Prevent MOVC instructions in external memory from reading program
bytes in internal memory.
EA
is sampled and latched on reset. Allow
no further programming
of EPROM.
Level 2 plus no verify operation. Also, prevents MOVX instructions in external
memory from reading SRAM (MOVX) in internal memory.
Level 3 plus no external execution.
2
P
U
U
3
4
P
P
P
P
U
P
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS87C550-QCL | EPROM High-Speed Micro with A/D and PWM |
| DS87C550-FCL | EPROM High-Speed Micro with A/D and PWM |
| DS87C550-FNL | EPROM High-Speed Micro with A/D and PWM |
| DS87C550-KCL | EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QNL | EPROM High-Speed Micro with A/D and PWM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS87C550-FCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-FNL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-KCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QCL | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM High-Speed Micro with A/D and PWM |
| DS87C550-QCL+ | 功能描述:IC MCU EPROM ADC/PWM HS 68-PLCC RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:87C 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:260 系列:73S12xx 核心處理器:80515 芯體尺寸:8-位 速度:24MHz 連通性:I²C，智能卡，UART/USART，USB 外圍設(shè)備:LED，POR，WDT 輸入/輸出數(shù):9 程序存儲器容量:64KB（64K x 8） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:2K x 8 電壓 - 電源 (Vcc/Vdd):2.7 V ~ 5.5 V 數(shù)據(jù)轉(zhuǎn)換器:- 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:68-VFQFN 裸露焊盤 包裝:管件 |
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