AT89S8253芯片性能解密

以下是我们对AT89S8253芯片的简单介绍供各位参考：
AT89S8253 Features：
· Compatible with MCS·-51 Products
· 32 Programmable I/O Lines
· Three 16-bit Timer/Counters
· Nine Interrupt Sources
· Enhanced UART Serial Port with Framing Error Detection and Automatic
Address Recognition
· Enhanced SPI （Double Write/Read Buffered） Serial Interface
· Low-power Idle and Power-down Modes
· Interrupt Recovery from Power-down Mode
· Programmable Watchdog Timer
· Dual Data Pointer；Power-off Flag
· Flexible ISP Programming （Byte and Page Modes）
– Page Mode: 64 Bytes/Page for Code Memory, 32 Bytes/Page for Data Memory
· Four-level Enhanced Interrupt Controller
· Programmable and Fuseable x2 Clock Option
· Internal Power-on Reset
· 42-pin PDIP Package Option for Reduced EMC Emission
· Green （Pb/Halide-free） Packaging Option
· 12K Bytes of In-System Programmable （ISP） Flash Program Memory
– SPI Serial Interface for Program Downloading
– Endurance: 10,000 Write/Erase Cycles
· 2K Bytes EEPROM Data Memory
– Endurance: 100,000 Write/Erase Cycles
· 64-byte User Signature Array
· 2.7V to 5.5V Operating Range
· Fully Static Operation: 0 Hz to 24 MHz
· Three-level Program Memory Lock
· 256 x 8-bit Internal RAM

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