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參數(shù)資料
| 型號： | 25C128 |
| 廠商： | Microchip Technology Inc. |
| 英文描述： | 128K 5.0V SPI Bus Serial EEPROM(4.5~5.5V,128K位,SPI總線串行EEPROM) |
| 中文描述： | 128K的5.0V SPI總線串行EEPROM（4.5?5.5V的，128K的位和SPI總線串行EEPROM的） |
| 文件頁數(shù)： | 9/170頁 |
| 文件大?。?/td> | 4191K |
| 代理商： | 25C128 |
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2003 Microchip Technology Inc.
Preliminary
DS40300C-page 7
PIC16F62X
2.0
ARCHITECTURAL OVERVIEW
The high performance of the PIC16F62X family can be
attributed to a number of architectural features
commonly found in RISC microprocessors. To begin
with, the PIC16F62X uses a Harvard architecture, in
which, program and data are accessed from separate
memories using separate buses. This improves
bandwidth over traditional Von Neumann architecture
where program and data are fetched from the same
memory. Separating program and data memory further
allows instructions to be sized differently than 8-bit
wide data word. Instruction opcodes are 14-bits wide
making it possible to have all single-word instructions.
A 14-bit wide program memory access bus fetches a
14-bit instruction in a single cycle. A two-stage pipeline
overlaps
fetch
and
execution
Consequently, all instructions (35) execute in a single
cycle (200 ns @ 20 MHz) except for program
branches.
of
instructions.
The Table below lists program memory (FLASH, Data
and EEPROM).
TABLE 2-1:
DEVICE DESCRIPTION
The PIC16F62X can directly or indirectly address its
register files or data memory. All Special Function
registers, including the program counter, are mapped in
the data memory. The PIC16F62X have an orthogonal
(symmetrical) instruction set that makes it possible to
carry out any operation, on any register, using any
Addressing mode. This symmetrical nature, and lack of
‘special optimal situations’ make programming with the
PIC16F62X simple yet efficient. In addition, the learning
curve is reduced significantly.
The PIC16F62X devices contain an 8-bit ALU and
working register. The ALU is a general purpose
arithmetic unit. It performs arithmetic and Boolean
functions between data in the working register and any
register file.
The ALU is 8-bit wide and capable of addition,
subtraction, shift and logical operations. Unless
otherwise mentioned, arithmetic operations are two's
complement in nature. In two-operand instructions,
typically one operand is the working register
(W register). The other operand is a file register or an
immediate constant. In single operand instructions, the
operand is either the W register or a file register.
The W register is an 8-bit working register used for ALU
operations. It is not an addressable register.
Depending on the instruction executed, the ALU may
affect the values of the Carry (C), Digit Carry (DC), and
Zero (Z) bits in the STATUS register. The C and DC bits
operate as a Borrow and Digit Borrow out bit,
respectively, bit in subtraction. See the
SUBLW
and
SUBWF
instructions for examples.
A simplified block diagram is shown in Figure 2-1, and
a description of the device pins in Table 2-1.
Two types of data memory are provided on the
PIC16F62X devices. Non-volatile EEPROM data
memory is provided for long term storage of data such
as calibration values, lookup table data, and any other
data which may require periodic updating in the field.
This data is not lost when power is removed. The other
data memory provided is regular RAM data memory.
Regular RAM data memory is provided for temporary
storage of data during normal operation. It is lost when
power is removed.
Device
Memory
FLASH
Program
RAM
Data
EEPROM
Data
PIC16F627
1024 x 14
224 x 8
128 x 8
PIC16F628
2048 x 14
224 x 8
128 x 8
PIC16LF627
1024 x 14
224 x 8
128 x 8
PIC16LF628
2048 x 14
224 x 8
128 x 8
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 25LC128 | 128K 5.0V SPI Bus Serial EEPROM(2.5~5.5V,128K位,SPI總線串行EEPROM) |
| 25C256 | 256K 5.0V SPI Bus Serial EEPROM(4.5~5.5V,256K位,SPI總線串行EEPROM) |
| 25C160 | 8K/16K 5.0V SPI Bus Serial EEPROM |
| 25C080 | 8K 5.0V SPI Bus Serial EEPROM(4.5~5.5V,3MHz,8K位,10M次可自定時(shí)擦寫周期,EEPROM) |
| 25C320 | 32K 5.0V SPI Bus Serial EEPROM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 25C14X51AM | 功能描述:保險(xiǎn)絲 CYL 25A 660V 14x51mm RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類型:SMD/SMT 系列:485 |
| 25C14X51GI | 功能描述:保險(xiǎn)絲 CYL 660vac 25A 14 x 51mm RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類型:SMD/SMT 系列:485 |
| 25C14X51GI/I | 功能描述:保險(xiǎn)絲 Fuse,Cylinder w/indicator,14x51mm.25A,660V,gI RoHS:否 制造商:Littelfuse 產(chǎn)品:Surface Mount Fuses 電流額定值:0.5 A 電壓額定值:600 V 保險(xiǎn)絲類型:Fast Acting 保險(xiǎn)絲大小/組:Nano 尺寸:12.1 mm L x 4.5 mm W 安裝風(fēng)格: 端接類型:SMD/SMT 系列:485 |
| 25C150BCGG5ZB | 制造商:BOLTS 功能描述: |
| 25C16 | 制造商:CATALYST 制造商全稱:Catalyst Semiconductor 功能描述:1K/2K/4K/8K/16K SPI Serial CMOS E2PROM |
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