参数资料
型号: TMX320F28069PZPA
厂商: Texas Instruments
文件页数: 125/174页
文件大小: 0K
描述: IC MCU 32BIT 128KB FLASH 100LQFP
产品培训模块: ControlSUITE
Piccolo F2806x
Motor Signal Chain Overview
TPS75005 Single IC Power for C2000 MCU
标准包装: 1
系列: TMS320F2806x, Piccolo™, C2000™
核心处理器: C28x
芯体尺寸: 32-位
速度: 80MHz
连通性: CAN,I²C,McBSP,SCI,SPI,UART/USART
外围设备: 欠压检测/复位,DMA,POR,PWM,WDT
输入/输出数: 54
程序存储器容量: 256KB(128K x 16)
程序存储器类型: 闪存
RAM 容量: 50K x 16
电压 - 电源 (Vcc/Vdd): 1.71 V ~ 1.995 V
数据转换器: A/D 16x12b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 100-LQFP
包装: 托盘
其它名称: 296-32778
TMX320F28069PZPA-ND
/512
WDCLK
WDCR (WDPS[2:0])
WDCLK
WDCNTR(7:0)
WDKEY(7:0)
Good Key
1
0
1
WDCR (WDCHK[2:0])
Bad
WDCHK
Key
WDCR (WDDIS)
Clear Counter
SCSR (WDENINT)
Watchdog
Prescaler
Generate
Output Pulse
(512 OSCCLKs)
8-Bit
Watchdog
Counter
CLR
WDRST
WDINT
Watchdog
55 + AA
Key Detector
XRS
Core-reset
WDRST(A)
Internal
Pullup
SPRS698D – NOVEMBER 2010 – REVISED DECEMBER 2012
Normally, when the input clocks are present, the CPU-watchdog counter decrements to initiate a CPU-
watchdog reset or WDINT interrupt. However, when the external input clock fails, the CPU-watchdog
counter stops decrementing (that is, the watchdog counter does not change with the limp-mode clock).
NOTE
The CPU-watchdog is different from the NMI watchdog. The CPU-watchdog is the legacy
watchdog that is present in all 28x devices.
NOTE
Applications in which the correct CPU operating frequency is absolutely critical should
implement a mechanism by which the MCU will be held in reset, should the input clocks ever
fail. For example, an R-C circuit may be used to trigger the XRS pin of the MCU, should the
capacitor ever get fully charged. An I/O pin may be used to discharge the capacitor on a
periodic basis to prevent it from getting fully charged. Such a circuit would also help in
detecting failure of the flash memory.
A.
The WDRST signal is driven low for 512 OSCCLK cycles.
Figure 2-16. CPU-Watchdog Module
The WDINT signal enables the watchdog to be used as a wakeup from IDLE/STANDBY mode.
In STANDBY mode, all peripherals are turned off on the device. The only peripheral that remains
functional is the CPU-watchdog. This module will run off OSCCLK. The WDINT signal is fed to the LPM
block so that it can wake the device from STANDBY (if enabled). See Section 2.10, Low-power Modes
Block, for more details.
In IDLE mode, the WDINT signal can generate an interrupt to the CPU, via the PIE, to take the CPU out of
IDLE mode.
In HALT mode, the CPU-watchdog can be used to wake up the device through a device reset.
54
Device Overview
Copyright 2010–2012, Texas Instruments Incorporated
相关PDF资料
PDF描述
VI-26T-IX-F1 CONVERTER MOD DC/DC 6.5V 75W
TMX320F28069PFPA IC MCU 32BIT 128KB FLASH 80LQFP
VI-26R-IX-F2 CONVERTER MOD DC/DC 7.5V 75W
VI-26P-IX-F3 CONVERTER MOD DC/DC 13.8V 75W
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