High performance CMOS flash version of the 80C51 CMOS single-chip 8-bit microController: a 64-KB flash memory block for code and for data. The flash memory can be programmed in parallel or serial mode using ISP or software. The programming voltage is internally generated from the standard VCC pin. This device retains all of the features of the Microchip 80C52 and adds a programmable counter array, 1792 bytes of XRAM, hardware watchdog timer, SPI interface, keyboard, versatile serial channel that facilitates multiprocessor communication (EUART), and a speed improvement mechanism (X2 Mode).
80C52 Compatible 8051 Instruction Compatible Six 8-bit I/O Ports (64 Pins or 68 Pins Versions) Four 8-bit I/O Ports (44 Pins Version) Three 16-bit Timer/Counters 256 Bytes Scratch Pad
Attribute
Value
Family Name
AT89C51
Package Type
VQFP
Mounting Type
Surface Mount
Pin Count
44
Device Core
80C52
Data Bus Width
8bit
Program Memory Size
64 kB
Maximum Frequency
40MHz
RAM Size
2.048 kB
Number of PWM Units
1 x 8 bit
Number of SPI Channels
1
Number of UART Channels
1
Typical Operating Supply Voltage
5.5 (Maximum) V
Dimensions
10.1 x 10.1 x 1.45mm
Pulse Width Modulation
1 (5 x 8 bit)
Program Memory Type
Flash
Instruction Set Architecture
8051
Length
10.1mm
Maximum Operating Temperature
+85 °C
Width
10.1mm
Height
1.45mm
Minimum Operating Temperature
-40 °C
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