參數(shù)資料
型號(hào): DS87C550-QNL
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 27/49頁(yè)
文件大?。?/td> 0K
描述: IC MCU EPROM ADC/PWM HS 68-PLCC
標(biāo)準(zhǔn)包裝: 18
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,PWM,WDT
輸入/輸出數(shù): 55
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類型: OTP
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
數(shù)據(jù)轉(zhuǎn)換器: A/D 6x10b
振蕩器型: 外部
工作溫度: -40°C ~ 85°C
封裝/外殼: 68-LCC(J 形引線)
包裝: 管件
DS87C550 EPROM High-Speed Microcontroller with ADC and PWM
33 of 49
OTHER EPROM OPTIONS
The DS87C550 has user-selectable options that must be set before beginning software execution. These
options use EPROM bits rather than SFRs.
The EPROM selectable options may be programmed as shown in Table 10. The Option Register sets or
reads these selections. The bits in the Option Register have the following function:
Bit 7 -4
Reserved. Program to a 1.
Bit 3
Watchdog POR default.
Set to 1: Watchdog reset function is disabled on power-up.
Set to 0: Watchdog reset function is enabled automatically on power up.
Bit 2-0
Reserved. Program to a 1.
SIGNATURE
The Signature bytes identify the product and programming revision to EPROM programmers. This
information is located at programming addresses 30h, 31h, and 60h. This information is as follows:
Address
Value
Meaning
30h
DAh
Manufacturer
31h
55
Model
60h
00
Extension
EPROM PROGRAMMING CONFIGURATION Figure 5
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