Product Summary

The AT89C51ED2-UM is an 8-bit microcontroller. It contains a 64-Kbyte Flash memory block for code and for data. The 64-Kbytes Flash memory can be programmed either in parallel mode or in serial mode with the ISP capability or with software. The programming voltage is internally generated from the standard VCC pin. The AT89C51ED2-UM retains all of the features of the Atmel 80C52 with 256 bytes of internal RAM, a 9-source 4-level interrupt controller and three timer/counters. The AT89C51ED2-UM provides 2048 bytes of EEPROM for nonvolatile data storage. In addition, the AT89C51ED2-UM has a Programmable Counter Array, an XRAM of 1792 bytes, a Hardware Watchdog Timer, SPI interface, Keyboard, a more versatile serial channel that facilitates multiprocessor communication (EUART) and a speed improvement mechanism (X2 Mode).

Parametrics

AT89C51ED2-UM absolute maximum ratings: (1)I = industrial : -40°C to 85°C; (2)Storage Temperature : -65°C to + 150°C; (3)Voltage on VCC to VSS : -0.5V to + 6.5V; (4)VVoltage on Any Pin to VSS : -0.5V to VCC + 0.5V; (5)Power Dissipation : 1 W(2).

Features

AT89C51ED2-UM features: (1)Integrated Power Monitor (POR/PFD)to Supervise Internal Power Supply; (2)ISP (In-System Programming)Using Standard VCC Power Supply; (3)2048 Bytes Boot ROM Contains Low Level Flash Programming Routines and a Default Serial Loader; (4)Asynchronous Port Reset; (5)Full-duplex Enhanced UART with Dedicated Internal Baud Rate Generator; (6)Low EMI (Inhibit ALE); (7)Hardware Watchdog Timer (One-time Enabled with Reset-Out), Power-off Flag; (8)Power Control Modes: Idle Mode, Power-down Mode; (9)Single Range Power Supply: 2.7V to 5.5V; (10)Industrial Temperature Range (-40 to +85°C); (11)Packages: PLCC44, VQFP44, PLCC68, VQFP64.

Diagrams

 AT89C51ED2-UM pin connection

AT8934
AT8934

TE Connectivity

General Purpose / Industrial Relays SEALED R RELAY

Data Sheet

0-11: $920.24
AT8985P
AT8985P

Other


Data Sheet

Negotiable 
AT8989UP
AT8989UP

Other


Data Sheet

Negotiable 
AT8992-A2-T-1
AT8992-A2-T-1


IC SWITCH PHY 64-TQFP

Data Sheet

Negotiable 
AT8992M-A2-T-1
AT8992M-A2-T-1


IC SWITCH PHY 100-MQFP

Data Sheet

Negotiable 
AT8993-A2-T-1
AT8993-A2-T-1


IC SWITCH PHY 100-MQFP

Data Sheet

Negotiable