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SST89E52RC
FlashFlex MCU

The SST89E52RC is a member of the FlashFlex family of 8-bit microcontroller products designed and manufactured with SST patented and proprietary SuperFlash CMOS semiconductor process technology. The split-gate cell design and thick-oxide tunneling injector offer significant cost and reliability benefits for our customers.This device uses the 8051 instruction set and is pin-for-pin compatible with standard 8051 microcontroller devices.

The SST89E52RC comes with 17/9 KByte of on-chip flash EEPROM program memory which is divided into 2 independent program memory partitions. The primary partition occupies 16/8 KByte of internal program memory space and the secondary partition occupies 1 KByte of internal program memory space.

The flash memory can be programmed via a standard 87C5x OTP EPROM programmer fitted with a special adapter and firmware for SST devices. During power-on reset, the device can be configured as either a slave to an external host for source code storage or a master to an external host for an in-system programming (ISP) operation. The device IS designed to be programmed in-system on the printed circuit board for maximum flexibility. An example of the bootstrap loader (BSL) in memory, demonstrating initial user program code loading or subsequent user code updating via an ISP operation, is provided on the SST website. The sample BSL is for the user’s reference only.

In addition to 17/9 KByte of SuperFlash EEPROM on-chip program memory and 512 x8 bits of on-chip RAM, the device can address up to 64 KByte of external program memory and up to 64 KByte of external RAM.

The highly reliable, patented SST SuperFlash technology and memory cell architecture have a number of important advantages for designing and manufacturing flash EEPROMs. These advantages translate into significant cost and reliability benefits for our customers.

Application Notes

Boot-Strap Loader

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