The Wayback Machine - https://web.archive.org/web/20121103130201/http://www.keil.com:80/dd/search_parm.asp

Device Database®

Parametric Search

Use the following form to search the Keil Device Database for microcontrollers with the selected parameters.

Select the Desired Device Parameters Below Select More Parameters to Narrow the Results

Device Family:	ARM C16x 251 8051

On-chip RAM and XRAM:
On-chip ROM/OTP/EPROM/FLASH:

JTAG:	Don't Care Required
On-Chip Debug:	Don't Care Required
In-System Prog.:	Don't Care Required
In-Application Prog.:	Don't Care Required

Power Supply:	Volts
MIPS:	minimum
Timer/Counters:	minimum
I/O Pins:	minimum
PCA Channels:	minimum
A/D Channels:	minimum
D/A Channels:	minimum

Power-Down Mode:	Don't Care Required
Idle Mode:	Don't Care Required
Brownout Detection:	Don't Care Required

Real-Time Clock:	Don't Care Required
Watchdog Timer:	Don't Care Required

Analog Comparator:	Don't Care 1+ 2+ 3+
DMA:	Don't Care Required
PWM:	Don't Care Required
SSC/USART:	Don't Care Required
UARTs:	Don't Care 1+ 2+ 3+
CAN:	Don't Care 1+ 2+ 3+
I²C:	Don't Care Required
USB:	Don't Care Required
SPI:	Don't Care Required
LIN:	Don't Care Required
SMBus:	Don't Care Required
Ethernet:	Don't Care Required
SDLC:	Don't Care Required
HDLC:	Don't Care Required

Please note that the device listing may be very long and wide and may not fit on your screen. A printer-friendly version of the list is available but you may need to adjust your printer options for landscape output.

Apr	NOV	May
	03
2011	2012	2014