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8XC51FX データシート(PDF) 7 Page - Intel Corporation |
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8XC51FX データシート(HTML) 7 Page - Intel Corporation |
7 / 20 page 8XC51FX ONCE MODE The ONCE (‘‘On-Circuit Emulation’’) Mode facilitates testing and debugging of systems using the 8XC51FX without the 8XC51FX having to be re- moved from the circuit The ONCE Mode is invoked by 1) Pull ALE low while the device is in reset and PSEN is high 2) Hold ALE low as RST is deactivated While the device is in ONCE Mode the Port 0 pins float and the other port pins and ALE and PSEN are weakly pulled high The oscillator circuit remains ac- tive While the 8XC51FX is in this mode an emulator or test CPU can be used to drive the circuit Normal operation is restored when a normal reset is applied 8XC51FX EXPRESS The Intel EXPRESS system offers enhancements to the operational specifications of the MCS-51 family of microcontrollers These EXPRESS products are designed to meet the needs of those applications whose operating requirements exceed commercial standards The EXPRESS program includes the commercial standard temperature range with burn-in and an ex- tended temperature range with or without burn-in With the commercial standard temperature range operational characteristics are guaranteed over the temperature range of 0 Cto70 C With the extend- ed temperature range option operational character- istics are guaranteed over the range of b40 Cto a 85 C The optional burn-in is dynamic for a minimum time of 168 hours at 125 C with VCC e 69V g 025V following guidelines in MlL-STD-883 Method 1015 Package types and EXPRESS versions are identified by a one- or two-letter prefix to the part number The prefixes are listed in Table 3 For the extended temperature range option this data sheet specifies the parameters which deviate from their commercial temperature range limits NOTE Intel offers Express Temperature specifica- tions for all 8XC51FX speed options except for 33 MHz Table 3 Prefix Identification Prefix Package Type Temperature Range Burn-In D Cerdip Commercial No N PLCC Commercial No P Plastic Commercial No S QFP Commercial No LD Cerdip Extended Yes LN PLCC Extended Yes LP Plastic Extended Yes LS QFP Extended Yes TD Cerdip Extended No TN PLCC Extended No TP Plastic Extended No TS QFP Extended No NOTE Contact distributor or local sales office to match EXPRESS prefix with proper device EXAMPLES P87C51FC indicates 87C51FC in a plastic package and specified for commercial temperature range without burn-in LD87C51FC indicates 87C51FC in a cerdip package and specified for extended temperature range with burn-in 7 |
同様の部品番号 - 8XC51FX |
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同様の説明 - 8XC51FX |
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