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AT89C52 datasheet download:
http://www.chinaicmart.com/series-AT8/AT89c52.html
Features
ˇ Compatible with MCS-51TM Products
ˇ 8 Kbytes of In-System Reprogrammable Flash Memory
Endurance: 1,000 Write/Erase Cycles
ˇ Fully Static Operation: 0 Hz to 24 MHz
ˇ Three-Level Program Memory Lock
ˇ 256 x 8-Bit Internal RAM
ˇ 32 Programmable I/O Lines
ˇ Three 16-Bit Timer/Counters
ˇ Eight Interrupt Sources
ˇ Programmable Serial Channel
ˇ Low Power Idle and Power Down Modes
Description
The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer
with 8 Kbytes of Flash programmable and erasable read only memory
(PEROM). The device is manufactured using Atmels high density
nonvolatile memory technology and is compatible with the industry
standard 80C51 and 80C52 instruction set and pinout. The on-chip Flash
allows the program memory to be reprogrammed in-system or by a
conventional nonvolatile memory programmer. By combining a versatile 8-
bit CPU with Flash on a monolithic chip, the Atmel AT89C52 is a
powerful microcomputer which provides a highly flexible and cost
effective solution to many embedded control applications.
The AT89C52 provides the following standard features: 8 Kbytes of
Flash, 256 bytes of RAM, 32 I/O lines, three 16-bit timer/counters, a
six-vector two-level interrupt architecture, a full duplex serial
port, on-chip oscillator, and clock circuitry. In addition, the
AT89C52 isdesigned with static logic for operation down to zero
frequency and supports two software selectable power saving modes. The
Idle Mode stops the CPU while allowing the RAM, timer/counters, serial
port, and interrupt system to continue functioning.
The Power Down Mode saves the RAM contents but freezes the oscillator,
disabling all other chip functions until the next hardware reset.
http://www.chinaicmart.com/series-AT8/AT89c52.html
Features
ˇ Compatible with MCS-51TM Products
ˇ 8 Kbytes of In-System Reprogrammable Flash Memory
Endurance: 1,000 Write/Erase Cycles
ˇ Fully Static Operation: 0 Hz to 24 MHz
ˇ Three-Level Program Memory Lock
ˇ 256 x 8-Bit Internal RAM
ˇ 32 Programmable I/O Lines
ˇ Three 16-Bit Timer/Counters
ˇ Eight Interrupt Sources
ˇ Programmable Serial Channel
ˇ Low Power Idle and Power Down Modes
Description
The AT89C52 is a low-power, high-performance CMOS 8-bit microcomputer
with 8 Kbytes of Flash programmable and erasable read only memory
(PEROM). The device is manufactured using Atmels high density
nonvolatile memory technology and is compatible with the industry
standard 80C51 and 80C52 instruction set and pinout. The on-chip Flash
allows the program memory to be reprogrammed in-system or by a
conventional nonvolatile memory programmer. By combining a versatile 8-
bit CPU with Flash on a monolithic chip, the Atmel AT89C52 is a
powerful microcomputer which provides a highly flexible and cost
effective solution to many embedded control applications.
The AT89C52 provides the following standard features: 8 Kbytes of
Flash, 256 bytes of RAM, 32 I/O lines, three 16-bit timer/counters, a
six-vector two-level interrupt architecture, a full duplex serial
port, on-chip oscillator, and clock circuitry. In addition, the
AT89C52 isdesigned with static logic for operation down to zero
frequency and supports two software selectable power saving modes. The
Idle Mode stops the CPU while allowing the RAM, timer/counters, serial
port, and interrupt system to continue functioning.
The Power Down Mode saves the RAM contents but freezes the oscillator,
disabling all other chip functions until the next hardware reset.