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DS2251T32-16

Description
Microcontroller, 8-Bit, 8051 CPU, 16MHz, CMOS, SIMM-72
CategoryThe embedded processor and controller    Microcontrollers and processors   
File Size596KB,22 Pages
ManufacturerMaxim
Websitehttps://www.maximintegrated.com/en.html
Download Datasheet Parametric Compare View All

DS2251T32-16 Overview

Microcontroller, 8-Bit, 8051 CPU, 16MHz, CMOS, SIMM-72

DS2251T32-16 Parametric

Parameter NameAttribute value
Is it lead-free?Contains lead
Is it Rohs certified?incompatible
MakerMaxim
Parts packaging codeSIMM
package instructionSIMM, SSIM72
Contacts72
Reach Compliance Codenot_compliant
Has ADCNO
Address bus width16
bit size8
CPU series8051
maximum clock frequency16 MHz
DAC channelNO
DMA channelNO
External data bus width8
JESD-30 codeR-XSMA-N72
JESD-609 codee0
Number of I/O lines32
Number of terminals72
Maximum operating temperature70 °C
Minimum operating temperature
PWM channelNO
Package body materialUNSPECIFIED
encapsulated codeSIMM
Encapsulate equivalent codeSSIM72
Package shapeRECTANGULAR
Package formMICROELECTRONIC ASSEMBLY
Peak Reflow Temperature (Celsius)240
power supply5 V
Certification statusNot Qualified
RAM (bytes)32768
rom(word)0
ROM programmabilityN/A
speed16 MHz
Maximum slew rate45 mA
Maximum supply voltage5.5 V
Minimum supply voltage4.5 V
Nominal supply voltage5 V
surface mountNO
technologyCMOS
Temperature levelCOMMERCIAL
Terminal surfaceTIN LEAD
Terminal formNO LEAD
Terminal pitch1.27 mm
Terminal locationSINGLE
Maximum time at peak reflow temperatureNOT SPECIFIED
uPs/uCs/peripheral integrated circuit typeMICROCONTROLLER
Base Number Matches1
DS2251T
128k Soft Microcontroller Module
www.maxim-ic.com
FEATURES
8051-Compatible Microcontroller Adapts
to Its Task
32, 64, or 128kbytes of Nonvolatile SRAM
for Program and/or Data Storage
In-System Programming via On-Chip Serial
Port
Capable of Modifying its Own Program or
Data Memory in the End System
Provides Separate Byte-Wide Bus for
Peripherals
Performs CRC-16 Check of NV RAM
Memory
High-Reliability Operation
Maintains All Nonvolatile Resources Up to
10 Years in the Absence of V
CC
at Room
Temperature
Power-Fail Reset
Early Warning Power-fail Interrupt
Watchdog Timer
Lithium Backed Memory Remembers System
State
Precision Reference for Power Monitor
Fully 8051-Compatible
128 Bytes Scratchpad RAM
Two Timer/Counters
On-Chip Serial Port
32 Parallel I/O Port Pins
Permanently Powered Real-Time Clock
PIN CONFIGURATION
1
DS2251T
72-Pin SIMM
72
DESCRIPTION
The DS2251T 128k soft microcontroller module is an 8051-compatible microcontroller module based on
nonvolatile RAM technology. It is designed for systems that need large quantities of nonvolatile memory.
Like other members of the secure microcontroller family, it provides full compatibility with the 8051
instruction set, timers, serial port, and parallel I/O ports. By using NV RAM instead of ROM, the user can
program, then reprogram the microcontroller while in-system. The application software can even change
its own operation. This allows frequent software upgrades, adaptive programs, customized systems, etc.
In addition, by using NV RAM, the DS2251T is ideal for data logging applications. The powerful real-
time clock includes interrupts for time stamp and date. It keeps time to one-hundredth of seconds using its
on-board 32kHz crystal.
1 of 22
REV: 061306

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DS2251T32-16 DS2251T64-16 DS2251T128-16 DS2251T-128-16# DS2251T-32-16# DS2251T-64-16#
Description Microcontroller, 8-Bit, 8051 CPU, 16MHz, CMOS, SIMM-72 Microcontroller, 8-Bit, 8051 CPU, 16MHz, CMOS, SIMM-72 Microcontroller, 8-Bit, 8051 CPU, 16MHz, CMOS, SIMM-72 IC MCU 8BIT 128KB NVSRAM 72SIMM IC MCU 8BIT 32KB NVSRAM 72SIMM IC MCU 8BIT 64KB NVSRAM 72SIMM
Is it lead-free? Contains lead Contains lead Contains lead Lead free Lead free Lead free
Is it Rohs certified? incompatible incompatible incompatible conform to conform to conform to
Maker Maxim Maxim Maxim Maxim Maxim Maxim
Parts packaging code SIMM SIMM SIMM SIMM SIMM SIMM
package instruction SIMM, SSIM72 SIMM, SSIM72 SIMM, SSIM72 SIMM, SIMM, SIMM,
Contacts 72 72 72 72 72 72
Reach Compliance Code not_compliant not_compliant not_compliant unknown unknown unknown
Has ADC NO NO NO NO NO NO
Address bus width 16 16 16 16 16 16
bit size 8 8 8 8 8 8
maximum clock frequency 16 MHz 16 MHz 16 MHz 16 MHz 16 MHz 16 MHz
DAC channel NO NO NO NO NO NO
DMA channel NO NO NO NO NO NO
External data bus width 8 8 8 8 8 8
JESD-30 code R-XSMA-N72 R-XSMA-N72 R-XSMA-N72 R-XSMA-N72 R-XSMA-N72 R-XSMA-N72
Number of I/O lines 32 32 32 32 32 32
Number of terminals 72 72 72 72 72 72
Maximum operating temperature 70 °C 70 °C 70 °C 70 °C 70 °C 70 °C
PWM channel NO NO NO NO NO NO
Package body material UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED UNSPECIFIED
encapsulated code SIMM SIMM SIMM SIMM SIMM SIMM
Package shape RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR RECTANGULAR
Package form MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY MICROELECTRONIC ASSEMBLY
Peak Reflow Temperature (Celsius) 240 240 240 NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
Certification status Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified Not Qualified
speed 16 MHz 16 MHz 16 MHz 16 MHz 16 MHz 16 MHz
Maximum supply voltage 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V 5.5 V
Minimum supply voltage 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V 4.5 V
Nominal supply voltage 5 V 5 V 5 V 5 V 5 V 5 V
surface mount NO NO NO NO NO NO
technology CMOS CMOS CMOS CMOS CMOS CMOS
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
Terminal form NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD NO LEAD
Terminal location SINGLE SINGLE SINGLE SINGLE SINGLE SINGLE
Maximum time at peak reflow temperature NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED NOT SPECIFIED
uPs/uCs/peripheral integrated circuit type MICROCONTROLLER MICROCONTROLLER MICROCONTROLLER MICROCONTROLLER MICROCONTROLLER MICROCONTROLLER
Base Number Matches 1 1 1 1 1 1
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