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參數(shù)資料
| 型號： | SST89E564RD-40-I-PJ |
| 廠商： | Silicon Storage Technology, Inc. |
| 英文描述： | FlashFlex51 MCU |
| 中文描述： | FlashFlex51單片機 |
| 文件頁數(shù)： | 12/62頁 |
| 文件大?。?/td> | 680K |
| 代理商： | SST89E564RD-40-I-PJ |
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12
Preliminary Specifications
FlashFlex51 MCU
SST89E564RD / SST89V564RD / SST89E554RC / SST89V554RC
2001 Silicon Storage Technology, Inc.
S71207-00-000
9/01
555
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.
The SC0 bit is programmed via an External Host Mode
command or an IAP Mode command. See Table 4-2 and
Table 4-6.
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.
Caution must be taken when dynamically changing the
SFCF[0] bit. Since this will cause different physical memory
to be mapped to the logical program address space. The
user must avoid executing block switching instructions
within the address range 0000H to 1FFFH.
3.3 Data Memory
The device has 1024 x8 bits of on-chip RAM and can
address up to 64 KByte of external data memory.
The device has four sections of internal data memory:
1. The lower 128 Bytes of RAM (00H to 7FH) are
directly and indirectly addressable.
2. The higher 128 Bytes of RAM (80H to FFH) are
indirectly addressable.
3. The Special Function Registers (SFRs, 80H to
FFH) are directly addressable only.
4. The expanded RAM of 768 Bytes (00H to 2FFH) is
indirectly addressable by the move external
instruction (MOVX) and clearing the EXTRAM bit.
(See “Auxiliary Register (AUXR)” on page 20)
3.4 Dual Data Pointers
The device has two 16-bit data pointers. The DPTR Select
(DPS) bit in AUXR1 determines which of the two data
pointers is accessed. When DPS=0, DPTR0 is selected;
when DPS=1, DPTR1 is selected. Quickly switching
between the two data pointers can be accomplished by a
single INC instruction on AUXR1.
3.5 Special Function Registers (SFR)
Most of the unique features of the FlashFlex51 microcon-
troller family are controlled by bits in special function regis-
ters (SFRs) located in the SFR Memory Map shown in
Table 3-4. Individual descriptions of each SFR are provided
and Reset values indicated in Tables 3-5 to 3-9.
TABLE
3-2: SFCF V
ALUES
FOR
P
ROGRAM
M
EMORY
B
LOCK
S
WITCHING
FOR
SST89E554RC/SST89V554RC
SFCF[1:0]
10, 11
Program Memory Block Switching
Block 1 is not visible to the PC;
Block 1 is reachable only via In-Application Programming from E000H - FFFFH.
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.
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.
01
00
T3-2.0 555
TABLE
3-3: SFCF V
ALUES
U
NDER
D
IFFERENT
R
ESET
C
ONDITIONS
SC1
1
1
1. SC1 only applies to SST89E554RC and SST89V554RC.
SC0
1
State of SFCF[1:0] after:
WDT
Reset
or
Brown-out
Reset
x0
Power-on
or
External
Reset
00
(default)
01
10
11
Software
Reset
10
1
0
0
0
1
0
x1
10
11
11
10
11
T3-3.0 555
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SST89E564RD-40-I-TQI | FlashFlex51 MCU |
| SST89E564RD-40-I-TQJ | FlashFlex51 MCU |
| SST89V554RC | FlashFlex51 MCU |
| SST89V554RC-40-C-NI | FlashFlex51 MCU |
| SST89V554RC-40-C-NJ | FlashFlex51 MCU |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SST89E564RD-40-I-QIF | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex MCU |
| SST89E564RD-40-I-TQI | 制造商:SST 制造商全稱:Silicon Storage Technology, Inc 功能描述:FlashFlex51 MCU |
| SST89E564RD-40-I-TQJ | 功能描述:8位微控制器 -MCU 64KB+8KB 40ns RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| SST89E564RD-40-I-TQJE | 功能描述:8位微控制器 -MCU 64KB+8KB 40ns RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小: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 安裝風格:SMD/SMT |
| SST89E58 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述: |
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