LPC2148 is the ARM 7 solution from NXP (formerly Philips). It has a maximum speed of 60 MHz and is ideal for may Embedded applications. It is a 32 bit processor and can be used for RTOS applications also.
LPC 2148 - Hardware
IDG300 Dual Axis Gyroscope
Using ADC to read the data
See reference code.
MMA7455L Triple axis Accelerometer
Using the I2C to read the data from the Accelorometer. See reference code.