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:

MCU for low-power, IoT applications
NuVision Electronics DSP, Micros & Memory
Silicon Labs recently announced the PG26, a general-purpose microcontroller with a dedicated matrix vector processor to enhance AI/ML hardware accelerator speeds.

Read more...

---

EEPROMs for industrial and military markets
Vepac Electronics DSP, Micros & Memory
Designed to ensure the data retention and the secure and safe boot of digital systems, the memory product line includes small and medium density EEPROMs from 16 kb to 1 Mb.

Read more...

---

PLCnext – Open, IIoT-ready industrial platform
IOT Electronics DSP, Micros & Memory
PLCnext can be used alongside an existing PLC system, collecting control system data via EtherNet/IP, PROFINET, or MODBUS, and can push this information to a cloud instance.

Read more...

---

ICs vs modules: Understanding the technical trade-offs for IoT applications
NuVision Electronics Editor's Choice DSP, Micros & Memory
As the IoT continues to transform industries, design decisions around wireless connectivity components become increasingly complex with engineers often facing the dilemma of choosing between ICs and wireless modules for their IoT applications.

Read more...

---

Hardware quantum resistance to embedded controllers
Avnet Silica DSP, Micros & Memory
To help system architects meet evolving security demands, Microchip Technology has developed its MEC175xB embedded controllers with embedded immutable post-quantum cryptography support.

Read more...

---

High-performance processor for edge-AI
Altron Arrow DSP, Micros & Memory
The STM32MP23 microprocessor from STMicroelectronics is the latest addition to the STM32MP2 series, designed to meet the demands of industrial, IoT, and edge AI applications.

Read more...

---

PolarFire SoC FPGAs achieve AEC-Q100 qualification
ASIC Design Services DSP, Micros & Memory
Microchip Technology’s PolarFire SoC FPGAs have earned the Automotive Electronics Council AEC-Q100 qualification.

Read more...

---

Integrated STM32WBA6 wireless microcontrollers
Altron Arrow DSP, Micros & Memory
Cost-efficient and highly integrated embedded controllers for emerging 2,4 GHz wireless applications in smart home, health, factory, and agriculture.

Read more...

---

Ultra-low-power MCU with FPU Arm Cortex-M33
Altron Arrow DSP, Micros & Memory
STMicroelectronics has expanded its STM32 ultra-low-power family with the launch of the STM32U3 for cost-sensitive applications in industrial, medical, and consumer electronics devices.

Read more...

---

Low-jitter oscillators
DSP, Micros & Memory
The JOH21, JOE21 and JOD21 low-jitter oscillators with differential output are designed for applications that require accurate timing and precise synchronisation.

Read more...

---