參數(shù)資料
型號(hào): SST89V58RD2-33-I-NJE
廠商: Microchip Technology
文件頁(yè)數(shù): 6/92頁(yè)
文件大小: 0K
描述: IC MCU 8BIT 40KB FLASH 44PLCC
標(biāo)準(zhǔn)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(shè)備: 欠壓檢測(cè)/復(fù)位,POR,WDT
輸入/輸出數(shù): 36
程序存儲(chǔ)器容量: 32KB(32K x 8)
程序存儲(chǔ)器類(lèi)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
14
FlashFlex MCU
SST89V54RD2/RD / SST89V58RD2/RD
Not Recommended for New Designs
A Microchip Technology Company
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. (See Figure 8)
Figure 8: Dual Data Pointer Organization
DPL
82H
DPS = 0
→ DPTR0
DPS = 1
→ DPTR1
External Data Memory
DPS
1255 F06.0
DPH
83H
DPTR0
DPTR1
AUXR1 / bit0
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