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SST89E564-40-I-NJ Datasheet(PDF) 24 Page - Silicon Storage Technology, Inc

No. de pieza SST89E564-40-I-NJ
Descripción Electrónicos  FlashFlex51 MCU
Download  58 Pages
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Fabricante Electrónico  SST [Silicon Storage Technology, Inc]
Página de inicio  http://www.sst.com/
Logo SST - Silicon Storage Technology, Inc

SST89E564-40-I-NJ Datasheet(HTML) 24 Page - Silicon Storage Technology, Inc

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Preliminary Specifications
FlashFlex51 MCU
SST89E564 / SST89V564 / SST89E554 / SST89V554
©2001 Silicon Storage Technology, Inc.
S71181-03-000
9/01
384
4.0 FLASH MEMORY PROGRAMMING
The device internal flash memory can be programmed or
erased using the following two methods:
External Host Mode
In-Application Programming (IAP) Mode
4.1 External Host Programming Mode
External Host Programming Mode allows the user to pro-
gram the flash memory directly without using the CPU.
External Host Mode is entered by forcing PSEN# from a
logic high to a logic low while RST input is being held con-
tinuously high. The device will stay in External Host Mode
as long as RST = 1 and PSEN# = 0.
A Read-ID operation is necessary to “arm” the device in
External Host Mode, and no other External Host Mode com-
mands can be enabled until a Read-ID is performed. In
External Host Mode, the internal flash memory blocks are
accessed through the re-assigned I/O port pins (see Figure
4-1 for details) by an external host, such as a MCU program-
mer, a PCB tester or a PC-controlled development board.
Note: Symbol
signifies a negative pulse and the command is asserted during the low state of PROG#/ALE input. All other combinations of
the above input pins are invalid and may result in unexpected behaviors.
Note: VIL = Input Low Voltage; VIH = Input High Voltage; VIH1 = Input High Voltage (XTAL, RST); X = Don’t care; AL = Address low order byte;
AH = Address high order byte; DI = Data Input; DO = Data Output
TABLE
4-1: EXTERNAL HOST MODE COMMANDS FOR SST89E564/SST89V564
Operation
RST
PSEN#
PROG#/
ALE
EA#
P3[7]
P3[6]
P2[7]
P2[6]
P0[7:0]
P3[5:4]
P2[5:0]
P1[7:0]
Read-ID
VIH1
VIL
VIH
VIH
VIL
VIL
VIL
VIL
DO
AH
AL
Chip-Erase
VIH1
VIL
VIH
VIH
VIL
VIL
VIL
XX
X
Block-Erase
VIH1
VIL
VIH
VIH
VIH
VIL
VIH
XX
X
Sector-Erase
VIH1
VIL
VIH
VIH
VIL
VIH
VIH
XAHAL
Byte-Program
VIH1
VIL
VIH
VIH
VIH
VIH
VIL
DI
AH
AL
Byte-Verify (Read)
VIH1
VIL
VIH
VIH
VIH
VIH
VIL
VIL
DO
AH
AL
Select-Block0
VIH1
VIL
VIH
VIH
VIl
VIl
VIH
X55H
X
Select-Block1
VIH1
VIL
VIH
VIH
VIl
VIl
VIH
XA5H
X
Prog-SC0
VIH1
VIL
VIH
VIH
VIL
VIL
VIH
X5AH
X
Prog-SB1
VIH1
VIL
VIH
VIH
VIH
VIH
VIH
XX
X
Prog-SB2
VIH1
VIL
VIH
VIL
VIL
VIH
VIH
XX
X
Prog-SB3
VIH1
VIL
VIH
VIL
VIH
VIL
VIH
XX
X
T4-1.4 384


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