Please consider this device:  dsPIC30F6012A.   View Side By Side Comparison dsPIC30F General Purpose 16-bit Digital Signal Controller

Parameter Name	Value
Architecture	16-bit
CPU Speed (MIPS)	30
Memory Type	Flash
Program Memory (KB)	144
RAM Bytes	8,192
Temperature Range C	-40 to 125
Operating Voltage Range (V)	2.5 to 5.5
I/O Pins	52
Pin Count	64
System Management Features	PBOR, LVD
POR	Yes
WDT	Yes
Internal Oscillator	7.37 MHz, 512 kHz
nanoWatt Features	Fast Wake/Fast Control
Digital Communication Peripherals	2-UART, 2-SPI, 1-I2C
Codec Interface	Yes
Analog Peripherals	1-A/D 16x12-bit @ 200(ksps)
Comparators	0
CAN (#, type)	2 CAN
Capture/Compare/PWM Peripherals	8/8
Timers	5 x 16-bit 2 x 32-bit
Parallel Port	GPIO
Hardware RTCC	No
DMA	0

dsPIC30F6011, dsPIC30F6012, dsPIC30F6013, dsPIC30F6014 Datasheet

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