- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄11642 > DS87C520-WCL (Maxim Integrated Products)IC MCU EPROM/ROM 33MHZ HS 40CDIP PDF資料下載
參數(shù)資料
| 型號(hào)： | DS87C520-WCL |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 19/43頁 |
| 文件大小： | 0K |
| 描述： | IC MCU EPROM/ROM 33MHZ HS 40CDIP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 10 |
| 系列： | 87C |
| 核心處理器： | 8051 |
| 芯體尺寸： | 8-位 |
| 速度： | 33MHz |
| 連通性： | EBI/EMI，SIO，UART/USART |
| 外圍設(shè)備： | 電源故障復(fù)位，WDT |
| 輸入/輸出數(shù)： | 32 |
| 程序存儲(chǔ)器容量： | 16KB（16K x 8） |
| 程序存儲(chǔ)器類型： | EPROM，UV |
| RAM 容量： | 1K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 4.5 V ~ 5.5 V |
| 振蕩器型： | 外部 |
| 工作溫度： | 0°C ~ 70°C |
| 封裝/外殼： | 40-CDIP（0.600"，15.24mm）窗口 |
| 包裝： | 管件 |
| 其它名稱： | DS87C520WCL |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁當(dāng)前第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁
DS87C520/DS83C520 EPROM/ROM High-Speed Microcontrollers
26 of 43
Table 9. EPROM Programming Modes
MODE
RST
PSEN
ALE/
PROG
EA/VPP
P2.6
P2.7
P3.3
P3.6
P3.7
Program Code Data
H
L
PL
12.75V
L
H
Verify Code Data
H
L
H
L
H
Program Encryption Array
Address 0-3Fh
H
L
PL
12.75V
L
H
L
H
LB1
H
L
PL
12.75V
H
LB2
H
L
PL
12.75V
H
L
Program Lock Bits
LB3
H
L
PL
12.75V
H
L
H
L
Program Option Register
Address FCh
H
L
PL
12.75V
L
H
L
Read Signature or Option
Registers 30, 31, 60 FCh
H
L
H
L
Table 10. DS87C520 EPROM Lock Bits
LOCK BITS
LEVEL
LB1
LB2
LB3
PROTECTION
1
U
No program lock. Encrypted verify if encryption table was
programmed.
2
P
U
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.
3
P
U
Level 2 plus no verify operation. Also, prevent MOVX
instructions in external memory from reading SRAM (MOVX) in
internal memory.
4
P
Level 3 plus no external execution.
SECURITY OPTIONS
The DS87C520 employs a standard three-level lock that restricts viewing of the EPROM contents. A 64-
byte Encryption Array allows the authorized user to verify memory by presenting the data in encrypted
form.
Lock Bits
The security lock consists of three lock bits. These bits select a total of four levels of security. Higher
levels provide increasing security but also limit application flexibility. Table 10 shows the security
settings. Note that the programmer cannot directly read the state of the security lock. User software has
access to this information as described in the Memory section.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| VE-J6J-IZ-B1 | CONVERTER MOD DC/DC 36V 25W |
| D38999/20WG11SN | CONN RCPT 11POS WALL MNT W/SCKT |
| VE-J1B-IW-F1 | CONVERTER MOD DC/DC 95V 100W |
| VE-J14-IW-F4 | CONVERTER MOD DC/DC 48V 100W |
| MS27656T25F24S | CONN RCPT 24POS WALL MNT W/SCKT |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS87C530 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM MICRO WITH REAL TIME CLOCK |
| DS87C530_05 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS87C530_1 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM Micro with Real Time Clock |
| DS87C530+ECL | 制造商:Maxim Integrated Products 功能描述:MICRO OTP RTC 33MHZ 52P TQFP PB-FRR - Trays |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。