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參數(shù)資料
| 型號(hào)： | MAXQ1004-B01+ |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類(lèi)： | 微控制器/微處理器 |
| 英文描述： | RISC MICROCONTROLLER, QCC16 |
| 封裝： | 4 X 4 MM, ROHS COMPLIANT, TQFN-16 |
| 文件頁(yè)數(shù)： | 5/18頁(yè) |
| 文件大?。?/td> | 1247K |
| 代理商： | MAXQ1004-B01+ |
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MAXQ1004
1-Wire and SPI Authentication Microcontroller
13
16-Bit Timer/Counter
The microcontroller has one instance of the 16-bit Timer
0 timer/counter peripheral, which supports the following
functions:
13-bit timer/counter
16-bit timer/counter
8-bit timer with autoreload
2 8-bit timer/counters
Serial Peripherals
Serial Peripheral Interface (SPI)
The integrated SPI is an independent serial communi-
cation channel that communicates synchronously with
peripheral devices in a multiple-master or multiple-slave
system. The interface allows access to a 4-wire, full-
duplex serial bus and can be operated in either master
mode or slave mode. Collision detection is provided
when two or more masters attempt a data transfer at the
same time.
The maximum SPI master transfer rate is Sysclk/2. When
operating as an SPI slave, the device can support up to
Sysclk/4 SPI transfer rate. Data is transferred as an 8-bit
or 16-bit value, MSB first. In addition, the SPI module
supports configuration of an active SSEL state through
the slave active select.
1-Wire Bus System
The 1-Wire bus is a system that has a single bus master
and one or more slaves. This microcontroller is always
a slave device in any system. The bus master is typi-
cally another microcontroller. The discussion of this bus
system is broken down into three topics: hardware con-
figuration, transaction sequence, and 1-Wire signaling
(signal types and timing). The 1-Wire protocol defines
bus transactions in terms of the bus state during specific
time slots, which are initiated on the falling edge of sync
pulses from the bus master. Refer to Application Note
937: Book of iButton Standards for a more detailed
description the 1-Wire network and protocols.
The device permits the use of lower 1-Wire voltage levels
(as low as 1.7V) to support the device’s full operating
voltage, but can still be connected to a regular 1-Wire
bus of up to 6V.
Hardware Configuration
The 1-Wire bus has only a single data line (DQ); all
devices on the bus must be able to drive it at the appro-
priate time. This means that each device attached to the
1-Wire bus must have open-drain or high-impedance
outputs. The 1-Wire port is open drain.
Both the standard and overdrive communication speed
of 15.4kbps (max) and 111kbps (max), respectively,
are supported. The value of the pullup resistor primar-
ily depends on the network size and load conditions.
Recommended pullup resistor values can be found in
Table 4-1 of Application Note 937: Book of iButton
Standards.
The idle state for the 1-Wire bus is high. If, for any rea-
son, a transaction needs to be suspended, the bus must
remain in the idle state if the transaction is to resume. If
this does not occur and the bus is left low for more than
120Fs (standard speed), one or more devices on the bus
can be reset.
Table 1. Watchdog Interrupt Timeout
iButton is a registered trademark of Maxim Integrated
Products, Inc.
PMME
CD[1:0]
WATCHDOG INTERRUPT TIMEOUT (Sysclk = 6MHz)
WD[1:0] = 00
WD[1:0] = 01
WD[1:0] = 10
WD[1:0] = 11
0
00
212 (683Fs)
215 (5.46ms)
218 (43.7ms)
221 (350ms)
0
01
213 (1.36ms)
216 (11ms)
219 (87.4ms)
222 (700ms)
0
10
214 (2.73ms)
217 (21.8ms)
220 (175ms)
223 (1.4s)
0
11
215 (5.46ms)
218 (43.7ms)
221 (350ms)
224 (2.8s)
1
xx
220 (175ms)
223 (1.4s)
226 (11.2s)
229 (89.5s)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAXQ1004-B01+ | 功能描述:16位微控制器 - MCU 1-Wire and SPI Authentication MCU RoHS:否 制造商:Texas Instruments 核心:RISC 處理器系列:MSP430FR572x 數(shù)據(jù)總線寬度:16 bit 最大時(shí)鐘頻率:24 MHz 程序存儲(chǔ)器大小:8 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:2 V to 3.6 V 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:VQFN-40 安裝風(fēng)格:SMD/SMT |
| MAXQ1004-KIT# | 功能描述:開(kāi)發(fā)板和工具包 - 其他處理器 MAXQ1004 Eval Kit RoHS:否 制造商:Freescale Semiconductor 產(chǎn)品:Development Systems 工具用于評(píng)估:P3041 核心:e500mc 接口類(lèi)型:I2C, SPI, USB 工作電源電壓: |
| MAXQ1010 | 制造商:MAXIM 制造商全稱(chēng):Maxim Integrated Products 功能描述:Security Token Microcontroller with RTC and USB |
| MAXQ1010-A01+ | 制造商:Maxim Integrated Products 功能描述:MAXQ1010 PSWD GEN MICRO 48 TQFN - Rail/Tube |
| MAXQ1010-DNS+ | 制造商:Maxim Integrated Products 功能描述:MAXQ1010 PSWD GEN MICRO DIE WAFFLE - Gel-pak, waffle pack, wafer, diced wafer on film |
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