參數(shù)資料
型號: SST89V58RD2-33-C-NJE
廠商: Microchip Technology
文件頁數(shù): 62/92頁
文件大小: 0K
描述: IC MCU 8BIT 40KB FLASH 44PLCC
標準包裝: 26
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,SPI,UART/USART
外圍設(shè)備: 欠壓檢測/復(fù)位,POR,WDT
輸入/輸出數(shù): 36
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
EEPROM 大?。?/td> 8K x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 3.6 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25087A
10/11
65
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
Figure 30:Security Lock Levels
Table 24: Security Lock Options
Level
Security Lock Bits1,2
1. P = Programmed (Bit logic state = 0), U = Unprogrammed (Bit logic state = 1).
2. SFST[7:5] = Security Lock Status Bits (SB1_i, SB2_i, SB3_i)
Security Status of:
Security Type
SFST[7:5]
SB1
SB21
SB31
Block 1
Block 0
1
000
U
Unlock
No Security Features are Enabled.
2
100
P
U
SoftLock
MOVC instructions executed from
external program memory are dis-
abled from fetching code bytes from
internal memory, EA# is sampled
and latched on Reset, and further
programming of the flash is disabled.
3
011
101
U
P
U
P
Hard Lock Hard Lock Level 2 plus Verify disabled, both
blocks locked.
010
U
P
U
SoftLock
Level 2 plus Verify disabled. Code in
Block 1 may program Block 0 and
vice versa.
110
001
P
U
P
U
P
Hard Lock SoftLock
Level 2 plus Verify disabled. Code in
Block 1 may program Block 0.
4
111
P
Hard Lock Hard Lock Same as Level 3 hard lock/hard lock,
but MCU will start code execution
from the internal memory regardless
of EA#.
T0-0.0 25087
Level 1
Level 2
Level 3
Level 4
UUU/NN
PUU/SS
UPP/LL
PPU/LS
UPU/SS
PPP/LL
1255 F29.0
PUP/LL
UPP/LL
UUP/LS
Note: P = Programmed (Bit logic state = 0), U = Unprogrammed (Bit logic state = 1), N = Not Locked, L = Hard locked,
S = Soft locked
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