參數(shù)資料
型號(hào)： SST89V54RD2A-33-C-TQJE
元件分類(lèi)： 微控制器/微處理器
英文描述： 8-BIT, FLASH, 33 MHz, MICROCONTROLLER, PQFP44
封裝： ROHS COMPLIANT, MS-026, TQFP-44
文件頁(yè)數(shù)： 5/83頁(yè)
文件大?。?/td> 1746K
代理商： SST89V54RD2A-33-C-TQJE
Data Sheet
FlashFlex51 MCU
SST89E54RD2A/RDA / SST89E58RD2A/RDA
SST89V54RD2A/RDA / SST89V58RD2A/RDA
13
2006 Silicon Storage Technology, Inc.
S71339-00-000
12/06
FIGURE
3-2: Program Memory Organization for 32 KByte SST89x58RDxA
3.2 Program Memory Block Switching
The program memory block switching feature of the device allows either Block 1 or the lowest 8 KByte of Block 0 to be
used for the lowest 8 KByte of the program address space. SFCF[1:0] controls program memory block switching.
3.2.1 Reset Configuration of Program Memory
Block Switching
Program memory block switching is initialized after reset
according to the state of the Start-up Configuration bit SC0
and/or SC1. The SC0 and SC1 bits are programmed via
an external host mode command or an IAP Mode com-
mand. See Table 4-2.
Once out of reset, the SFCF[0] bit can be changed dynam-
ically by the program for desired effects. Changing SFCF[0]
will not change the SC0 bit.
1339 F03.0
External
64 KByte
EA# = 0
FFFFH
0000H
32 KByte
Block 0
EA# = 1
SFCF[1:0] = 10, 11
FFFFH
0000H
24 KByte
Block 0
8 KByte
Block 1
8 KByte
Block 1
EA# = 1
SFCF[1:0] = 00
FFFFH
2000H
7FFFH
8000H
DFFFH
E000H
DFFFH
E000H
7FFFH
8000H
0000H
1FFFH
External
24 KByte
8 KByte
Block 1
External
24 KByte
External
32 KByte
EA# = 1
SFCF[1:0] = 01
FFFFH
7FFFH
8000H
0000H
32 KByte
Block 0
TABLE
3-1: SFCF Values for Program Memory Block Switching
SFCF[1:0]
Program Memory Block Switching
10, 11
Block 1 is not visible to the PC;
Block 1 is reachable only via in-application programming from E000H - FFFFH.
01
Both Block 0 and Block 1 are visible to the PC.
Block 0 is occupied from 0000H - 7FFFH. Block 1 is occupied from E000H - FFFFH.
00
Block 1 is overlaid onto the low 8K of the program address space; occupying address locations 0000H -
1FFFH.
When the PC falls within 0000H - 1FFFH, the instruction will be fetched from Block 1 instead of Block 0.
Outside of 0000H - 1FFFH, Block 0 is used. Locations 0000H - 1FFFH of Block 0 are reachable through
in-application programming.
T3-1.0 1339
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SST89V54RD2RD 制造商:SST 制造商全稱(chēng):Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD2-RD 制造商:SST 制造商全稱(chēng):Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD-33-C-PI 制造商:SST 制造商全稱(chēng):Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU
SST89V54RD-33-C-PIE 功能描述:8位微控制器 -MCU 24KB+1KB 33MHz RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
SST89V54RD-33-C-QIF 功能描述:8位微控制器 -MCU 8-Bit 16K+8K Flash 33MHz 3/16-Bit Timer RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線(xiàn)寬度:8 bit 最大時(shí)鐘頻率:50 MHz 程序存儲(chǔ)器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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