FlashFlex51 MCU
SST89E564RD / SST89V564RD / SST89E554RC / SST89V554RC
SST89E/V564RD SST89E/VE554RC FlashFlex51 MCU
Data Sheet
FEATURES:
• 8-bit 8051-Compatible Microcontroller (MCU)
with Embedded SuperFlash Memory
– Fully Software Compatible
– Development Toolset Compatible
– Pin-For-Pin Package Compatible
• SST89E564RD/SST89E554RC Operation
– 0 to 40 MHz at 5V
• SST89V564RD/SST89V554RC Operation
– 0 to 33 MHz at 3V
• Total 1 KByte Internal RAM (256 Byte + 768 Byte)
• Dual Block SuperFlash EEPROM
– SST89E564RD/SST89V564RD:
64 KByte primary block + 8 KByte secondary
block (128-Byte sector size for both blocks)
– SST89E554RC/SST89V554RC:
32 KByte primary block + 8 KByte secondary
block (128-Byte sector size for both blocks)
– Individual Block Security Lock with SoftLock
– Concurrent Operation during
In-Application Programming (IAP)
– Memory Overlay for Interrupt Support
during IAP
• Support External Address Range up to 64
KByte of Program and Data Memory
• Three High-Current Port 1 pins (16 mA each)
• Three 16-bit Timers/Counters
• Full-Duplex, Enhanced UART
– Framing error detection
– Automatic address recognition
• Eight Interrupt Sources at 4 Priority Levels
• Programmable Watchdog Timer (WDT)
• Programmable Counter Array (PCA)
• Four 8-bit I/O Ports (32 I/O Pins)
• Second DPTR register
• Low EMI Mode (Inhibit ALE)
• SPI Serial Interface
• Standard 12 Clocks per cycle, the device has an
option to double the speed to 6 clocks per cycle.
• TTL- and CMOS-Compatible Logic Levels
• Brown-out Detection
• Low Power Modes
– Power-down Mode with External Interrupt Wake-up
– Idle Mode
• PDIP-40, PLCC-44 and TQFP-44 Packages
• Temperature Ranges:
– Commercial (0°C to +70°C)
– Industrial (-40°C to +85°C)
PRODUCT DESCRIPTION
The SST89E564RD, SST89V564RD, SST89E554RC, and
SST89V554RC are members of the FlashFlex51 family of 8-
bit microcontroller products designed and manufactured with
the state-of-the-art SuperFlash CMOS semiconductor pro-
cess technology. The devices use the 8051 instruction set
and are pin-for-pin compatible with standard 8051 microcon-
troller devices.
The device comes with 72/40 KByte of on-chip flash
EEPROM program memory using SST’s patented and pro-
prietary CMOS SuperFlash EEPROM technology with the
SST’s field-enhancing, tunneling injector, split-gate mem-
ory cells. The SuperFlash memory is partitioned into 2
independent program memory blocks. The primary Super-
Flash Block 0 occupies 64/32 KByte of internal program
memory space and the secondary SuperFlash Block 1
occupies 8 KByte of internal program memory space. The
8-KByte secondary SuperFlash block can be mapped to
the lowest location of the 64/32 KByte address space; it
can also be hidden from the program counter and used as
an independent EEPROM-like data memory. The flash
memory blocks can be programmed via a standard 87C5x
OTP EPROM programmer fitted with a special adapter and
©2003 Silicon Storage Technology, Inc.
S71207-04-000
12/03
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firmware for SST’s device. During the power-on reset, the
device can be configured as a slave to an external host for
source code storage or as a master to an external host for
an in-application programming (IAP) operation. The device
is designed to be programmed in-system and in-application
on the printed circuit board for maximum flexibility. The
device is pre-programmed with an example of the boot-
strap loader in the memory, demonstrating the initial user
program code loading or subsequent user code updating
via the IAP operation. An example bootstrap loader is avail-
able for the user’s reference and convenience only. SST
does not guarantee the functionality or the usefulness of
the sample bootstrap loader. Chip-Erase operations will
erase the pre-programmed sample code.
In addition to 72/40 KByte of SuperFlash EEPROM pro-
gram memory on-chip, the device can address up to 64
KByte of external program memory. In addition to 1024 x8
bits of on-chip RAM, up to 64 KByte of external RAM can
be addressed.
SST’s highly reliable, patented 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.
The SST logo, SuperFlash, and FlashFlex are registered trademarks of Silicon Storage Technology, Inc.
These specifications are subject to change without notice.
SST [ SILICON STORAGE TECHNOLOGY, INC ]
