Support for the R8C/3NT is limited to customers who have already adopted these products. If adopting new products, please consider other ranges such as the R8C/36T-A (large flash memory) or R8C/3JT (small Package).
The touch key microcontrollers (MCUs) of the R8C/3NT Group are devices incorporating an electrostatic capacitive touch detector into the R8C/3x Series.
By integrating on a single chip a touch sensor IC for touch detection and a microcontroller for controlling the system based on the signals received, the R8C/3NT Group specifically meets the following five customer needs.
- More compact system size, and further smaller WPP package (3 mm x 3mm) for smaller devices
- System control via I/O ports
- Touch key connection via touch detection input pins (5-input)
- Reduced power consumption
- Improved noise tolerance
|・||CPU core: R8C 16-bit CPU core|
|・||Minimum instruction execution time: |
50 nsec (f(Xin) = 20 MHz)
|・||Supply voltage: |
2.7 to 5.5 V/Max. 20 MHz, 1.8 to 5.5 V/Max. 5 MHz
48 KB/4 KB, 64 KB/6 KB, 96 KB/8 KB, 128 KB/10 KB
(RAM: 0.5 KB for touch detection)
|・||Data flash: 1 KB x 4 blocks (Touch setting values can be stored.), with background operation (BGO) function*1|
|・||DTC (Data transfer controller): 1 ch|
|・||Clock generation circuits: 4 circuits|
|-||XIN-XOUT main clock (oscillation stop detection circuit included)|
|-||XCIN-XCOUT sub clock|
|-||High-speed on-chip oscillator (40 MHz Typ.）|
|-||Low-speed on-chip oscillator (125 kHz Typ.)|
|・||Voltage detection circuit (LVD): |
3 circuits (detection levels selectable)
|・||Power-on reset (POR) circuit|
|・||Watchdog timer: 1 ch (supports hardware reset, selectable low-speed on-chip oscillator for the watchdog timer)|
|・||Multifunction timer: 3 ch|
|-||8-bit timer 2 ch (Timer RA, Timer RB)|
|-||16-bit timer 1 ch (Timer RC)|
|・||Real-time clock timer: 1ch|
|-||8-bit timer 1 ch (Timer RE)|
|・||Serial interface: 3 ch|
|-||Clock synchronous/UART0, UART1, UART2|
|・||I2C/SSU*2: 4 circuits|
|・||A/D converter: 10-bit x 12 ch|
|・||Touch detector (SCU)*3: 5-input (shared with I/O ports)|
(Reduces power consumption by allowing touch detection in wait mode.)
|・||I/O ports: Input/Output: 43, Input only: 1|
(Large-current drive capacity is provided. Variable input threshold values: 3 values)
48-pin WPP (3 mm x 3 mm)
*1: A function to read the program ROM area during data flash programming or block erase operation.
*2: Synchronous serial communication unit
*3: Sensor control unit
Click the link above to see the list of Non-promotion products.
Non-promotion products are only supported for customers who have already adopted them.
We do not recommended adoption of these products in new designs.