8 bit microcontroller with 5 KB RAM
28 March 2001
DSP, Micros & Memory
Every so often, one encounters a project that needs far more RAM than the 128, 256, or even 1024 bytes RAM in a conventional 8 bit microcontroller. For these special cases, NEC has now developed an advanced 80-pin standard microcontroller - the µPD78F0066. In the Flash variant, this microcontroller provides 5 KB RAM and 48 KB ROM. The version with Mask ROM (µPD780065) has the same RAM capacity but 40 KB ROM. Using special registers, it is possible to match the memory configuration of the Flash variant exactly to that of the Mask ROM version. This feature allows smooth switching from Flash to Mask ROM products after the ramp-up phase.
Based on the Von-Neumann architecture of the 78K0 family, the controller is capable, for example, of loading and then executing program code in RAM.
The µPD78F0066 (in an 80-pin LQFP package) comes with a number of integrated peripherals, including 60 I/O pins, 8-channel A/D converter with 8 bit resolution, one 16 bit and two 8 bit timers, watchdog, four serial interface channels (including 1 UART) and two PWM outputs. At an operating voltage of 2,7 to 5,5 V and a maximum clock frequency of 8,38 MHz the instruction execution time is adjustable in the range from 0,24 to 3,81 µs.
Since minimum power consumption is especially important in battery-operated applications, this device can be switched at any time to a power-saving subclock mode.
Impact Memec
(011) 897 8600
Further reading:
ESP32-S31 for advanced IoT
iCorp Technologies
DSP, Micros & Memory
At the heart of the device is a dual-core 32-bit RISC-V MCU operating at up to 320 MHz, delivering 6,86 CoreMark/MHz performance with MMU support for efficient memory management.
Read more...
Cortex-M33 performance for cost-sensitive designs
Future Electronics
DSP, Micros & Memory
The STM32C5 series from STMicroelectronics introduces a new generation of entry-level microcontrollers engineered to deliver enhanced processing capability, modern security, and cost-effective scalability for connected embedded applications.
Read more...
Memory shortage 2026: Engineering implications for South Africa
DSP, Micros & Memory
[Sponsored] Addressing this challenge requires system-level thinking and adoption with McKinsey Electronics providing the engineering and sourcing framework required to maintain system resilience despite ongoing global constraints.
Read more...
Cost-effective microcontroller series
Altron Arrow
DSP, Micros & Memory
The STM32C5 series from STMicroelectronics delivers an excellent balance of performance, efficiency, and affordability for embedded designs that require more capability without increasing bill of materials cost.
Read more...
Battery-friendly Thread and BLE solution
iCorp Technologies
DSP, Micros & Memory
Positioned as an incremental upgrade to the ESP32-H2, Espressif’s ESP32-H21 adds an integrated DC-DC converter that reduces active current draw and helps extend battery life in power-sensitive consumer and industrial devices.
Read more...
Next generation HMI processing platform
Future Electronics
DSP, Micros & Memory
Microchip’s latest hybrid MCU SiP integrates an Arm926EJ-S processor with 512 Mb of DDR2 SDRAM and is engineered to meet the rising demand for sophisticated HMI solutions in modern vehicles.
Read more...
Low-power SoC for IoT designs
iCorp Technologies
DSP, Micros & Memory
Espressif’s ESP32-H4 is a dual-core 32-bit RISC-V SoC designed for battery-powered wireless products that require low energy consumption, strong security, and modern connectivity.
Read more...
Chip for high-density power
Future Electronics
DSP, Micros & Memory
Microchip’s dsPIC33AK256MPS306 Digital Signal Controllers combine high-resolution control, high-speed analogue, and security with support for post-quantum cryptography.
Read more...
The end of ‘entry-level’: STMicroelectronics’ STM32C5 sets a new baseline for embedded systems
DSP, Micros & Memory
[Sponsored] Instead of incrementally improving legacy Cortex-M0+ architectures, STM32C5 introduces a Cortex-M33-based platform into the entry-level category. This changes not only performance expectations, but also how engineers approach system architecture, consolidation, and long-term scalability.
Read more...
Cost-efficient wireless MCU
Future Electronics
DSP, Micros & Memory
The STMicroelectronics STM32WBA2 is a cost-effective, low-power wireless microcontroller designed for energy-sensitive IoT applications.
Read more...
printer friendly version