DS2250T Maxim Integrated Products, Inc., DS2250T Datasheet
DS2250T
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DS2250T Summary of contents
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... SIMM ORDERING INFORMATION PART RAM SIZE (kB) DS2250-32-16 DS2250-32-16+ DS2250-64-16 DS2250-64-16# DS2250T-32-16 DS2250T-32-16+ DS2250T-64-16 DS2250T-64-16+ + Denotes lead-free/RoHS-compliant package # Denotes RoHS-compliant device that may contain lead exempt under the RoHS requirements. Soft Microcontroller Module FEATURES . The CC space is and resources are 40 Operating information is contained in the Secure Microcontroller User’ ...
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DS2250(T) BLOCK DIAGRAM Figure ...
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PIN DESCRIPTION PIN P1.0 - P1.7. General purpose I/O Port 1 11, 13, 15 RST - Active high reset input. A logic 1 applied to this pin will activate a reset state. 17 This pin ...
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INSTRUCTION SET The DS2250(T) executes an instruction set which is object code-compatible with the industry standard 8051 microcontroller result, software development packages which have been written for the 8051 are compatible with the DS2250(T), including cross-assemblers, high-level language ...
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PROGRAM LOADING The Program Load Modes allow initialization of the NV RAM Program/Data Memory. This initialization may be performed in one of two ways: 1. Serial Program Loading which is capable of performing Bootstrap Loading of the DS2250(T). This feature ...
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SERIAL BOOTSTRAP LOADER The Serial Program Load Mode is the easiest, fastest, most reliable, and most complete method of initially loading application software into the DS2250(T) nonvolatile RAM. Communication can be performed over a standard asynchronous serial communications port. A ...
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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 ...
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ABSOLUTE MAXIMUM RATINGS Voltage Range on Any Pin Relative to Ground……………………………………………..-0.3V to +7.0V Operating Temperature Range………………………………………………………………...0°C to +70°C Storage Temperature………………………………………………………………………...-40°C to +70°C Soldering Temperature………………………………………………………………+260°C for 10 seconds This is a stress rating only and functional operation of the device at ...
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AC CHARACTERISTICS—EXPANDED BUS MODE TIMING SPECIFICATIONS = 5V ±5 0°C to +70°C PARAMETER 1 Oscillator Frequency 2 ALE Pulse Width 3 Address Valid to ALE Low 4 Address Hold After ALE Low 5 ALE ...
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EXPANDED PROGRAM MEMORY READ CYCLE EXPANDED DATA MEMORY READ CYCLE ...
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EXPANDED DATA MEMORY WRITE CYCLE EXTERNAL CLOCK TIMING ...
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AC CHARACTERISTICS—EXTERNAL CLOCK DRIVE = 5V ±5 0°C to +70°C PARAMETER 28 External Clock High Time 29 External Clock Low Time 30 External Clock Rise Time 31 External Clock Fall Time AC CHARACTERISTICS—SERIAL PORT ...
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AC CHARACTERISTICS—POWER CYCLING TIMING = 5V ±5 0°C to +70°C PARAMETER 32 Slew Rate from V CCmin 33 Crystal Start-up Time 34 Power-On Reset Delay POWER CYCLE TIMING SYMBOL to 3. CSU ...
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AC CHARACTERISTICS—PARALLEL PROGRAM LOAD TIMING = 5V ±5 0°C to +70°C PARAMETER 40 Oscillator Frequency 41 Address Setup to PROG 42 Address Hold after PROG 43 Data Setup to Low PROG 44 Data Hold ...
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PARALLEL PROGRAM LOAD TIMING CAPACITANCE (Test Frequency = 1MHz, T PARAMETER Output Capacitance Input Capacitance = +25°C.) A SYMBOL MIN TYP MAX UNITS NOTES ...
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DS2250(T) TYPICAL I CC NORMAL OPERATION IS MEASURED USING: 1) EXTERNAL CRYSTALS ON XTAL1 AND 2. 2) ALL PORT PINS DISCONNECTED. 3) RST = 0V AND PART PERFORMING ENDLESS LOOP WRITING TO INTERNAL MEMORY. ...
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PACKAGE DRAWING PKG INCHES DIM MIN MAX A 2.645 2.655 B 2.379 2.389 C 0.845 0.855 D 0.395 0.405 E 0.245 0.255 F 0.050 BSC G 0.075 0.085 H 0.245 0.255 I 0.950 BSC J 0.120 0.130 K 1.320 1.330 ...
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