The TMS1099JL is a ROM-less version of TMS1000-TMS1200. It has 64 pins, 64x4 bits of RAM, 8 bits of "O" parallel latched data outputs and 13 "R" individually addressed output latches. The package pin count is 64.

The maximum-rated voltage is 20 V and the typical dissipation is 90mW (per power supply of 15 V).

This ROM-less version addresses 1024 x 8 bits on an external memory (EPROM).