SST89E554 Просмотр технического описания (PDF) - Silicon Storage Technology
Номер в каталоге
Компоненты Описание
производитель
SST89E554 Datasheet PDF : 58 Pages
| |||
FlashFlex51 MCU
SST89E564 / SST89V564 / SST89E554 / SST89V554
Preliminary Specifications
TABLE 4-2: EXTERNAL HOST MODE COMMANDS FOR SST89E554/SST89V554
Operation
PROG#/
P3[5:4]
RST PSEN# ALE EA# P3[7] P3[6] P2[7] P2[6] P0[7:0] P2[5:0] P1[7:0]
Read-ID
Chip-Erase
VIH1
VIL
VIH
VIH
VIL
VIL
VIL
VIL
DO
AH
AL
VIH1
VIL
⇓
VIH
VIH
VIL
VIL
VIL
X
X
X
Block-Erase
Sector-Erase
Byte-Program
VIH1
VIL
VIH1
VIL
VIH1
VIL
⇓
VIH
VIH
VIH
VIL
VIH
X
A[15:13]
X
⇓
VIH
VIH
VIL
VIH
VIH
X
AH
AL
⇓
VIH
VIH
VIH
VIH
VIL
DI
AH
AL
Byte-Verify (Read) VIH1
VIL
Prog-SC0
VIH1
VIL
Prog-SC1
VIH1
VIL
VIH
VIH
VIH
VIH
VIL
VIL
DO
AH
AL
⇓
VIH
VIH
VIL
VIL
VIH
X
5AH
X
⇓
VIH
VIH
VIL
VIL
VIH
X
AAH
X
Prog-SB1
Prog-SB2
Prog-SB3
VIH1
VIL
⇓
VIH
VIH
VIH
VIH
VIH
X
X
X
VIH1
VIL
⇓
VIH
VIL
VIL
VIH
VIH
X
X
X
VIH1
VIL
⇓
VIH
VIL
VIH
VIL
VIH
X
X
X
T4-2.0 384
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; A[15:13] = 0xxb for Block 0 and A[15:13] = 111b for Block 1
VSS VDD RST
XTAL1
XTAL2
0
Port 0 6
7
0
0
1
1
2
2
Port 2 3
Ready/Busy# 3
4
Port 3
Address Bus A14 4
5
A15-A14 A15 5
6
Flash
6
7
Control Signals
7
0
Port 1 6
7
Input/
Output
Data
Bus
Address Bus
A13-A8
Flash
Control Signals
Address Bus
A7-A0
EA# ALE / PSEN#
PROG#
384 ILL F01.1
FIGURE 4-1: I/O PIN ASSIGNMENTS FOR EXTERNAL HOST MODE
©2001 Silicon Storage Technology, Inc.
25
S71181-03-000 9/01 384
Share Link: 