New Holtek 1.5V Low Voltage MCU series includes four new devices, the I/O type HT48R01M and HT48R02M as well as the A/D type HT46R01M and HT46R02M. All devices in the series include an internal DC-DC converter, which can accept input voltages down to 0.7V, but still maintain a fixed output voltage of 3.0V. This allows the devices to be powered by a single cell battery, as well as providing a 3V power source for external application components.
The devices have an OTP type memory capacity of either 1Kx15 or 2Kx15, 96 bytes of SRAM Data Memory, 10 I/O pins, an internal Time Base and two 8-bit Timers. The A/D type devices include a 12-bit internal high speed ADC and an 8-bit PWM output. Four types of system oscillators are provided, a high frequency crystal type, low frequency crystal (32KHz) type, external RC oscillator and internal RC oscillator. This latter internal RC oscillator requires no external components and can be chosen to have one of three different frequencies, 4MHz, 8MHz or 12MHz, each with a tolerance of ±2%.
This new 1.5V Battery MCU device series are available in 16-pin NSOP package types. A host of other special characteristics including flexible I/O functions, low operating voltage, and low cost will see this new device range forming solutions to a multitude of low voltage applications in the battery powered portable and consumer product areas.
Features
- Operating voltage: 3.0V (Typ.)
- Sleep mode and wake-up functions to reduce power consumption
- Oscillator types:
- External high freuency Crystal -- HXT
- External RC -- ERC
- Internal RC -- HIRC
- External low frequency crystal -- LXT
- Three operational modes: Normal, Slow, Sleep
- Fully integrated internal 4MHz and 8MHz oscillator requires no external components
- OTP Program Memory: 1Kx15 ~ 2Kx15
- RAM Data Memory: 96x8
- Watchdog Timer function
- LIRC oscillator function for watchdog timer
- All instructions executed in one or two instruction cycles
- Table read instructions
- 63 powerful instructions
- 6-level subroutine nesting
- Bit manipulation instruction
- Low voltage reset function
- 16-pin NSOP package
- 10 bidirectional I/O lines
- 4 channel 12-bit ADC
- 1 channel 8-bit PWM
- External interrupt input shared with an I/O line
- Two 8-bit programmable Timer/Event Counter with overflow interrupt and prescaler
- Time-Base function
- Programmable Frequency Divider - PFD
- Embedded 3V DC/DC
To support these devices, Holtek provides a full suite of hardware and software development tools, known as the HT-IDE3000. These tools include a hardware In-Circuit Emulator as well as all the software functions one would expect such as trace analysis, programmable breakpoint setting and many others to ensure that designers have their new product designs debugged and up and running in the shortest time possible.
