What this 8-bit MCU brings to the board
The Texas Instruments COP8AME9EMW8/NOPB is an 8-bit COP8 core MCU running at 20 MHz with 8 KB of on-chip Flash program memory and 512 x 8 bytes of RAM. It comes in a 28-SOIC wide-body surface-mount package and operates across the industrial temperature range of -40°C to 85°C. The part integrates a 6-channel 10-bit ADC, a temperature sensor, brown-out detect and POR, plus a PWM and watchdog timer — enough on-chip peripheral mix to handle a motor drive feedback loop or a sensor hub without extra glue logic.
Memory and I/O — what fits
8 KB Flash is the firmware budget; 512 bytes of RAM handles the data stack and a few small buffers. If your existing code for a legacy COP8 design fits in that envelope, this part is a direct drop-in. The 21 general-purpose I/O pins give you room for a parallel LCD bus, a row of pushbuttons, and a few status LEDs alongside the serial interfaces. Connectivity is limited to Microwire/Plus (SPI-compatible) and a single UART/USART. No I²C or CAN on this die — if your application needs those buses, you will need a software bit-bang or a different MCU variant.
Supply and temperature — field-fit check
Operates on a 4.5 V to 5.5 V supply. The -40°C to 85°C rating covers unheated factory floors.
Lifecycle and sourcing reality
This part carries an Active lifecycle status from the manufacturer — no NRND or EOL flags, no last-time-buy clock ticking. It is ROHS3 compliant.