I have posted the code for this a while ago.
If you can't find it let me know.
Ted Gregorius (Pres)
TAG Systems Racing Products, Inc.
www.tagrace.com
----- Original Message -----
From: pitbullpc2
To: msp430@msp4...
Sent: Thursday, October 16, 2003 3:10 PM
Subject: [msp430] I2C interface w/ external EEPROM
Hello group. I am trying to figure out what I need to do to
interface my MSP430F149 to a Microchip 24LC256 serial eeprom. I
have read the TI doc SLAA115, "I2C Interfacing of the MSP430 to a
24xx Series EEPROM", and app. notes on the Microchip website. The
SLAA115 references a sample application that no longer exists under
that name on the TI site. According to what I have read, I can just
use any two general I/O pins for the SCL clock line and SDA data
line and I need to add pull-up resistors on the lines in order to
get the logic highs and lows by changing the pin directions. I get
all this. However, I don't get how or what is needed to generate
and control the clock signal line. This particular eeprom has a max
frequency of 400 kHz.
Can someone please clear this up for me? Any links to sample code
or further explanation would be greatly appreciated.
Thank you in advance.
Mike
.
Hello group. I am trying to figure out what I need to do to
interface my MSP430F149 to a Microchip 24LC256 serial eeprom. I
have read the TI doc SLAA115, "I2C Interfacing of the MSP430 to a
24xx Series EEPROM", and app. notes on the Microchip website. The
SLAA115 references a sample application that no longer exists under
that name on the TI site. According to what I have read, I can just
use any two general I/O pins for the SCL clock line and SDA data
line and I need to add pull-up resistors on the lines in order to
get the logic highs and lows by changing the pin directions. I get
all this. However, I don't get how or what is needed to generate
and control the clock signal line. This particular eeprom has a max
frequency of 400 kHz.
Can someone please clear this up for me? Any links to sample code
or further explanation would be greatly appreciated.
Thank you in advance.
Mike