參數(shù)資料
型號(hào): SST89E52RC-33-C-PIE
廠商: Microchip Technology
文件頁數(shù): 3/71頁
文件大小: 0K
描述: IC MCU 8BIT 9KB FLASH 40PDIP
標(biāo)準(zhǔn)包裝: 9
系列: FlashFlex®
核心處理器: 8051
芯體尺寸: 8-位
速度: 33MHz
連通性: EBI/EMI,UART/USART
外圍設(shè)備: POR,WDT
輸入/輸出數(shù): 32
程序存儲(chǔ)器容量: 8KB(8K x 8)
程序存儲(chǔ)器類型: 閃存
EEPROM 大?。?/td> 1K x 8
RAM 容量: 512 x 8
電壓 - 電源 (Vcc/Vdd): 4.5 V ~ 5.5 V
振蕩器型: 外部
工作溫度: 0°C ~ 70°C
封裝/外殼: 40-DIP(0.600",15.24mm)
包裝: 管件
2011 Silicon Storage Technology, Inc.
DS25088A
10/11
11
FlashFlex MCU
SST89E52RC / SST89E54RC
Data Sheet
A Microchip Technology Company
Figure 5: Program Memory Organization and Code Security Protection
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 6)
Special Function Registers
Most of the unique features of the FlashFlex microcontroller family are controlled by bits in special
function registers (SFRs) located in the SFR memory map shown in Table 3. Individual descriptions of
each SFR are provided and reset values indicated in Tables 4 to 9.
0000H
1FFFH
0000H
3FFFH
1259 F02.3
2KByte Page
1KByte Page
4KByte Page
1KByte Page
SST89E54RC
SST89E52RC
Pr
imar
y
P
ar
tition
Pr
imar
y
P
ar
tition
Secondary
Partition
Secondary
Partition
External
64 KByte
EA#=0
FFFFH
0000H
EA#=1
EA# = 1
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