參數(shù)資料
型號(hào)： MAX7652CCB
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號(hào)調(diào)理
英文描述： Flash Programmable 12-Bit Integrated Data-Acquisition Systems
中文描述： SPECIALTY ANALOG CIRCUIT, PQFP64
封裝： 10 X 10 MM, 1.40 MM HEIGHT, MO-136BJ, TQFP-64
文件頁數(shù)： 17/36頁
文件大?。?/td> 479K
代理商： MAX7652CCB
M
Flash Programmable 12-Bit Integrated
Data-Acquisition Systems
______________________________________________________________________________________
17
Detailed Description
MAX7651/MAX7652 Architecture
The MAX7651/MAX7652 are complete 12-bit data-
acquisition systems featuring an algorithmic, switched-
capacitor, analog-to-digital converter (ADC), dual
pulse-width-modulated digital-to-analog converter
(DAC), and an industry-standard 8051 microprocessor
core with a variety of I/O and timing peripherals.
Using an external oscillator with an operating frequency
between 1MHz and 12MHz, the MAX7651/MAX7652
execute the majority of its commands in only four clock
periods to yield an average speed improvement of 2.5
times over typical 8051 microprocessors requiring 12
clock periods instructions. See the MAX7651/MAX7652
Programmer
’
s Reference Manual
for further details.
On-chip peripherals include four 8-bit parallel ports,
two serial ports, three general-purpose timers, and a
watchdog timer. The MAX7651/MAX7652 also feature
16kB in two banks of 8kB flash memory and 256 bytes
of high-speed random access memory.
Memory Organization
The MAX7651/MAX7652 support up to 64kB of external
program (read-only) memory and data (random-
access) memory in conformance with the 8051 industry
standard.
Figure 4 shows the program memory organization.
When
EA
is high, the CPU has access to two internal
8kB blocks of flash memory beginning at addresses
0000H (lower block) and 2000H (upper block).
Addresses 0000H
–
0002H and 0003H
–
006AH of the
lower block are reserved for the CPU reset vector and a
set of interrupt vectors, respectively (see Table 3).
Addresses 3FC0H
–
3FFFH of the upper block are also
reserved and cannot be accessed by the CPU.
Addresses 4000H
–
FFFFH are for external ROM. When
EA
is low, the external ROM must be used for all pro-
gram addresses (0000H
–
FFFFH).
Figure 5 shows the data memory (RAM) organization.
The first 256 bytes are partitioned between two internal
128-byte blocks. The lower block (addresses 0000H
–
007FH) is used for registers or scratchpad memory and
can be accessed either directly or indirectly (see the
MAX7651/MAX7652
Programmer
’
s Reference Manual
).
The upper block (addresses 0080H
–
00FFH) reflects a
set of special function registers (SFRs) when accessed
directly, and separate scratchpad memory when
accessed indirectly. Addresses 0100H
–
FFFFH are
reserved for external RAM.
Table 4 shows the SFR mapping to memory and Table
5 shows the SFR contents on power-up or reset.
Unshaded register designations are consistent with the
industry standard 8051. Shaded register designations
DIRECT RAM
UPPER 128
BYTES
BANK
SELECT
LOWER 128 BYTES
7FH
FFH
00H
FFH
80H
80H
7FH
2FH
1FH
17H
0FH
07H
00H
11
10
01
00
BIT-ADDRESSABLE
REGISTERS
BANK 3
BANK 2
BANK 1
BANK 0
SFR
SPACE
DIRECT
ADDRESSING
INDIRECT
ADDRESSING
LOWER 128
BYTES
DIRECT AND
INDIRECT
ADDRESSING
EXTERNAL
INTERRUPT
VECTORS
RESET
VECTOR
FFFFH
3FFFH
3FCOH
2000H
1FFFH
4000H
RESERVED
0000H
UPPER
INTERNAL
EA = 1
3FFFH
0000H
006AH
0001H
0002H
0000H
EXTERNAL
EA = 0
LOWER
INTERNAL
EA = 1
Figure 4. Program Memory Organization
Figure 5. Data Memory (RAM) Organization
相關(guān)PDF資料
PDF描述
MAX7652ECB Flash Programmable 12-Bit Integrated Data-Acquisition Systems
MAX766ESA -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX765 -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764-MAX766 -5V/-12V/-15V or Adjustable, High-Efficiency, Low IQ DC-DC Inverters
MAX764MJA ODS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX7652ECB 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
MAX765C/D 功能描述:直流/直流開關(guān)調(diào)節(jié)器 -12V or Adjustable High-Efficiency Low IQ DC-DC Inverters RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX765C/D DIE 制造商:Maxim Integrated Products 功能描述:
MAX765CPA 功能描述:直流/直流開關(guān)調(diào)節(jié)器 5/12/15/AdjV DC/DC Inverter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
MAX765CPA+ 功能描述:直流/直流開關(guān)調(diào)節(jié)器 5/12/15/AdjV DC/DC Inverter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*