參數資料
型號: SST89V58RD2-33-I-NJE
廠商: Microchip Technology
文件頁數: 63/92頁
文件大?。?/td> 0K
描述: IC MCU 8BIT 40KB FLASH 44PLCC
標準包裝: 27
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
外圍設備: 欠壓檢測/復位,POR,WDT
輸入/輸出數: 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: -40°C ~ 85°C
封裝/外殼: 44-LCC(J 形引線)
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25087A
10/11
66
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
Read Operation Under Lock Condition
The status of security bits SB1, SB2, and SB3 can be read when the read command is disabled by
security lock. There are three ways to read the status.
1.
External host mode: Read-back = 00H (locked)
2.
IAP command: Read-back = previous SFDT data
3.
MOVC: Read-back = FFH (blank)
Table 25: Security Lock Access Table
Level
SFST[7:5]
Source
Address1
Target
Address2
Byte-Verify Allowed
MOVC Allowed
External Host3
IAP
5xRDx
4
111b
(hard lock on both blocks)
Block 0/1
N
Y
External
N/A
Y
External
Block 0/1
N
External
N/A
Y
3
011b/101b
(hard lock on both blocks)
Block 0/1
N
Y
External
N/A
Y
External
Block 0/1
N
External
N/A
Y
001b/110b
(Block 0 = SoftLock,
Block 1 = hard lock)
Block 0
N
Y
Block 1
N
External
N/A
Y
Block 1
Block 0
N
Y
Block 1
N
Y
External
N/A
Y
External
Block 0/1
N
External
N/A
Y
010b
(SoftLock on both blocks)
Block 0
N
Y
Block 1
N
Y
External
N/A
Y
Block 1
Block 0
N
Y
Block 1
N
Y
External
N/A
Y
External
Block 0/1
N
External
N/A
Y
2
100b
(SoftLock on both blocks)
Block 0
Y
N
Y
Block 1
Y
External
N/A
Y
Block 1
Block 0
Y
Block 1
Y
N
Y
External
N/A
Y
External
Block 0/1
Y
N
External
N/A
Y
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