AT48801
| Part Number | AT48801 |
| Manufacturer | ATMEL Corporation |
| Description | 8 Bit Spread- Spectrum Microcontroller |
| Published | Mar 23, 2005 |
| Detailed Description | AT48801 Features • • • • • • • • • Compatible with MCS-51™ Products 8K bytes of On-Board Program Memory Fully Static O... |
| Datasheet |
 AT48801 PDF File
|
Overview
The device is compatible with the industry standard 80C51 and 80C52 instruction set and pinout.
The Atmel AT48801 is a powerful microcomputer which provides a highly flexible and cost effective solution to spread-spectrum applications.
The AT48801 provides the following standard features: 8K bytes of program memory, 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 AT48801 is designed 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.
8 Bit SpreadSpectrum Microcontroller Preliminary Pin Configuration PQFP 0629A 1-1 Block Diagram 1-2 AT48801 AT48801 Pin Description VCC Supply voltage.
GND Ground.
Port 0 Port 0 is an 8 bit open drain bidirectional I/O port.
As an output port, each pin can sink eight TTL inputs.
When 1s are written to port 0 pins, the pins can be used as high-impedance inputs.
Port 0 can also be configured to be the multiplexed low-order address/data bus during accesses to external program and data memory.
In this mode, P0 has internal pullups.
Port 1 Port 1 is an 8 bit bidirectional I/O port with internal pullups.
The Port 1 output buffers can sink/source fou...
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