参数资料
型号: MSP430F5502IRGZ
厂商: TEXAS INSTRUMENTS INC
元件分类: 微控制器/微处理器
英文描述: 16-BIT, FLASH, 25 MHz, RISC MICROCONTROLLER, PQCC48
封装: PLASTIC, VQFN-48
文件页数: 13/99页
文件大小: 1134K
代理商: MSP430F5502IRGZ
PRODUCTPREVIEW
MSP430F550x
SLAS645B – JULY 2009 – REVISED JULY 2010
www.ti.com
Bootstrap Loader (BSL)
The BSL enables users to program the flash memory or RAM using various serial interfaces. Access to the
device memory via the BSL is protected by an user-defined password. For complete description of the features of
the BSL and its implementation, see the MSP430 Memory Programming User's Guide, literature number
USB BSL
All devices come pre-programmed with the USB BSL. Usage of the USB BSL requires external access to the six
pins shown in Table 5. In addition to these pins, the application must support external components necessary for
normal USB operation e.g. proper crystal on XT2IN and XT2OUT, proper decoupling, etc.
Table 5. USB BSL Pin Requirements and Functions
DEVICE SIGNAL
BSL FUNCTION
RST/NMI/SBWTDIO
Entry sequence signal
PU.0/DP
USB data terminal DP
PU.1/DM
USB data terminal DM
PUR
USB pullup resistor terminal
VBUS
USB bus power supply
VSSU
USB ground supply
UART BSL
A UART BSL is also available that can be programmed by the user into the BSL memory by replacing the
pre-programmed, factory supplied, USB BSL. Usage of the UART BSL requires external access to the six pins
shown in Table 6.
Table 6. UART BSL Pin Requirements and Functions
DEVICE SIGNAL
BSL FUNCTION
RST/NMI/SBWTDIO
Entry sequence signal
TEST/SBWTCK
Entry sequence signal
P1.1
Data transmit
P1.2
Data receive
VCC
Power supply
VSS
Ground supply
20
Copyright 2009–2010, Texas Instruments Incorporated
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