參數(shù)資料
型號: SST89C58RC-40-C-QIF-T
廠商: Microchip Technology
文件頁數(shù): 4/88頁
文件大?。?/td> 0K
描述: IC MCU 8BIT FLASH 40WQFN
標準包裝: 3,000
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 40MHz
連通性: EBI/EMI,I²C,SMBus,UART/USART
外圍設(shè)備: 欠壓檢測/復位,POR,WDT
輸入/輸出數(shù): 32
程序存儲器容量: 32KB(32K x 8)
程序存儲器類型: 閃存
EEPROM 大小: 2K x 8
RAM 容量: 1K x 8
電壓 - 電源 (Vcc/Vdd): 2.7 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 40-WFQFN 裸露焊盤
包裝: 帶卷 (TR)
2011 Silicon Storage Technology, Inc.
DS25100A
12/11
12
FlashFlex MCU
SST89C58RC
Data Sheet
A Microchip Technology Company
Figure 6: Internal and External Data Memory Structure
Dual Data Pointers
The SST89C58RC 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. (See Figure 7)
000H
2FFH
00H
FFH
Upper 128 Bytes
Internal RAM
Lower 128 Bytes
Internal RAM
(Indirect
Direct
Addressing)
(Indirect Addressing)
(Direct Addressing)
Special
Function
Registers
(SFRs)
80H
FFH
FFFFH
000H
External
Data
Memory
2FFH
0000H
External
Data
Memory
EXTRAM = 0
EXTRAM = 1
Expanded RAM
0300H
(Indirect Addressing)
FFFFH
(Indirect Addressing)
80H
7FH
1294 F02.0
Expanded
RAM
768 Bytes
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