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參數資料
| 型號： | ADUC7129BSTZ126 |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 79/92頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DAS MCU ARM7 ADC/DDS 80-LQFP |
| 產品培訓模塊： | Direct Digital Synthesis Tutorial Series (1 of 7): Introduction |
| 標準包裝： | 1 |
| 系列： | MicroConverter® ADuC7xxx |
| 核心處理器： | ARM7 |
| 芯體尺寸： | 16/32-位 |
| 速度： | 41.78MHz |
| 連通性： | EBI/EMI，I²C，SPI，UART/USART |
| 外圍設備： | PLA，POR，PWM，PSM，溫度傳感器，WDT |
| 輸入/輸出數： | 38 |
| 程序存儲器容量： | 126KB（63K x 16） |
| 程序存儲器類型： | 閃存 |
| RAM 容量： | 8K x 8 |
| 電壓 - 電源 (Vcc/Vdd)： | 3 V ~ 3.6 V |
| 數據轉換器： | A/D 10x12b; D/A 1x10b |
| 振蕩器型： | 內部 |
| 工作溫度： | -40°C ~ 125°C |
| 封裝/外殼： | 80-LQFP |
| 包裝： | 托盤 |
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ADuC7128/ADuC7129
Rev. 0 | Page 80 of 92
Table 115. T3CON MMR Bit Designations
Bit
Value
Description
16:9
These bits are reserved and should be written as 0s by user code.
8
Count Up/Down Enable.
Set by user code to configure Timer3 to count up.
Cleared by user code to configure Timer3 to count down.
7
Timer3 Enable.
Set by user code to enable Timer3.
Cleared by user code to disable Timer3.
6
Timer3 Operating Mode.
Set by user code to configure Timer3 to operate in periodic mode.
Cleared by user to configure Timer3 to operate in free-running mode.
5
Watchdog Timer Mode Enable.
Set by user code to enable watchdog mode.
Cleared by user code to disable watchdog mode.
4
Secure Clear Bit.
Set by user to use the secure clear option.
Cleared by user to disable the secure clear option by default.
3:2
Timer3 Clock (32.768 kHz) Prescaler.
00
Source Clock/1 (Default).
01
Reserved.
10
Reserved.
11
Reserved.
1
Watchdog Timer IRQ Enable.
Set by user code to produce an IRQ instead of a reset when the watchdog reaches 0.
Cleared by user code to disable the IRQ option.
0
PD_OFF.
Set by user code to stop Timer3 when the peripherals are powered down via Bit 4 in the POWCON MMR.
Cleared by user code to enable Timer3 when the peripherals are powered down via Bit 4 in the POWCON MMR.
Secure Clear Bit (Watchdog Mode Only)
The secure clear bit is provided for a higher level of protection.
When set, a specific sequential value must be written to T3ICLR
to avoid a watchdog reset. The value is a sequence generated by
the 8-bit linear feedback shift register (LFSR) polynomial equal
to X8 + X6 + X5 + X + 1, as shown in Figure 59.
CLOCK
QD
4
QD
5
QD
3
QD
7
QD
6
QD
2
QD
1
QD
0
06020-
054
Figure 59. 8-Bit LFSR
The initial value or seed is written to T3ICLR before entering
watchdog mode. After entering watchdog mode, a write to
T3ICLR must match this expected value. If it matches, the LFSR
is advanced to the next state when the counter reload happens.
If it fails to match the expected state, reset is immediately
generated, even if the count has not yet expired.
The value 0x00 should not be used as an initial seed due to the
properties of the polynomial. The value 0x00 is always guaran-
teed to force an immediate reset. The value of the LFSR cannot
be read; it must be tracked/generated in software.
The following is an example of a sequence:
1.
Enter initial seed, 0 xAA, in T3ICLR before starting
Timer3 in watchdog mode.
2.
Enter 0 xAA in T3ICLR; Timer3 is reloaded.
3.
Enter 0x37 in T3ICLR; Timer3 is reloaded.
4.
Enter 0x6E in T3ICLR; Timer3 is reloaded.
5.
Enter 0x66. 0xDC was expected; the watchdog resets
the chip.
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相關代理商/技術參數 |
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| ADUC7129BSTZ1262 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC |
| ADUC7129BSTZ126-RL | 功能描述:IC DAS MCU ARM7 ADC/DDS 80-LQFP RoHS:是 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:MicroConverter® ADuC7xxx 產品培訓模塊:Graphics LCD System and PIC24 Interface Asynchronous Stimulus 標準包裝:27 系列:PIC® 24H 核心處理器:PIC 芯體尺寸:16-位 速度:40 MIP 連通性:I²C，SPI，UART/USART 外圍設備:欠壓檢測/復位，POR，PWM，WDT 輸入/輸出數:21 程序存儲器容量:12KB（4K x 24） 程序存儲器類型:閃存 EEPROM 大小:- RAM 容量:1K x 8 電壓 - 電源 (Vcc/Vdd):3 V ~ 3.6 V 數據轉換器:A/D 10x10b/12b 振蕩器型:內部 工作溫度:-40°C ~ 85°C 封裝/外殼:28-SOIC（0.295"，7.50mm 寬） 包裝:管件 產品目錄頁面:648 (CN2011-ZH PDF) 配用:AC164339-ND - MODULE SKT FOR PM3 28SOICDV164033-ND - KIT START EXPLORER 16 MPLAB ICD2 |
| ADUC7129BSTZ126-RL2 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Precision Analog Microcontroller ARM7TDMI MCU with 12-Bit ADC and DDS DAC |
| aduc7229bcpz126 | 制造商:Analog Devices 功能描述: |
| ADUC7229BCPZ126-RL | 制造商:Analog Devices 功能描述: |
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