MSP430F42x
MIXED SIGNAL MICROCONTROLLER
SLAS421A − APRIL 2004 − REVISED JUNE 2007
10
POST OFFICE BOX 655303
•
DALLAS, TEXAS 75265
module enable registers 1 and 2
7
6
5
4
0
UTXE0
3
2
1
rw–0
rw–0
Address
04h
URXE0
USPIE0
URXE0:
USART0: UART mode receive enable
UTXE0:
USART0: UART mode transmit enable
USPIE0:
USART0: SPI mode transmit and receive enable
7
6
5
4
0
3
2
1
Address
05h
Legend: rw−0,1:
Bit Can Be Read and Written. It Is Reset or Set by PUC.
rw−(0,1):
Bit Can Be Read and Written. It Is Reset or Set by POR.
SFR Bit Not Present in Device.
memory organization
MSP430F423
MSP430F425
MSP430F427
Memory
Interrupt vector
Code memory
Size
Flash
Flash
8KB
0FFFFh − 0FFE0h
0FFFFh − 0E000h
16KB
0FFFFh − 0FFE0h
0FFFFh − 0C000h
32KB
0FFFFh − 0FFE0h
0FFFFh − 08000h
Information memory
Size
256 Byte
010FFh − 01000h
256 Byte
010FFh − 01000h
256 Byte
010FFh − 01000h
Boot memory
Size
1kB
0FFFh − 0C00h
1kB
0FFFh − 0C00h
1kB
0FFFh − 0C00h
RAM
Size
256 Byte
02FFh − 0200h
512 Byte
03FFh − 0200h
1KB
05FFh − 0200h
Peripherals
16-bit
8-bit
8-bit SFR
01FFh − 0100h
0FFh − 010h
0Fh − 00h
01FFh − 0100h
0FFh − 010h
0Fh − 00h
01FFh − 0100h
0FFh − 010h
0Fh − 00h
bootstrap loader (BSL)
The MSP430 bootstrap loader (BSL) enables users to program the flash memory or RAM using a UART serial
interface. Access to the MSP430 memory via the BSL is protected by user-defined password. For complete
description of the features of the BSL and its implementation, see the Application report
Features of the MSP430
Bootstrap Loader
, Literature Number SLAA089.
BSL Function
PM Package Pins
Data Transmit
53 - P1.0
Data Receive
52 - P1.1
