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RL78/G1C

Compact microcontrollers supporting USB communications and rapid charging (USB 2.0, BC 1.2 compliant)

 

In addition to two USB 2.0 (full speed) host channels or one function channel, the RL78/G1C microcontrollers are compliant with Battery Charging Specification 1.2 (BC 1.2) for high-speed battery charging. These microcontrollers are suitable for office equipment that connect via USB such as a printer, mouse, and keyboard, as well as for USB chargers for healthcare devices, mobile batteries, and more.

 

Key Features:

ITEM RL78/G1C
Pin Count 48-pin 32-pin
Memory Flash Program 32 KB
Data Flash 2 KB
SRAM 5.5 KB
CPU RL78 CPU Core
Operating Frequency 24 MHz (max.)
Clock
circuit
Crystal / Ceramic
Resonators
6, 8, 12, 16 MHz, 32.768 kHz (Only 48-pin)
High Speed OCO 48 MHz +-1 % (Target)
Low Speed OCO 15 kHz +-15 % (Target)
PLL Built-in
I/O 38 22
Timer TAU(16-bit timer) 16-bit timer x 4 ch (Timer output : 4 ch) 16-bit timer x 4 ch (Timer output : 2 ch)
12-bit timer Interval timer x 1ch (15 kHz / 32.768 kHz)
RTC 1
10-bit A/D Convertor 9 ch (Scan 4 ch,
Conversion result comparison function)
8 ch (Scan 4 ch,
Conversion result comparison function)
Serial
interface
CSI / UART /
Simplified I2C
CSI: 2 ch , UART: 1ch,
Simplified I2C: 2 ch (max)
CSI: 2 ch , UART: 1 ch,
Simplified I2C: 2 ch (max)
I2C (Multi-master) 1
Interrupt 10 8
USB Function Host x 2 port / Peripheral x 1 port
Support speed Full speed (12 Mbps) / Low speed (1.5 Mbps)
End Point 5
Buffer Size 448 Byte
Transmission mode Control, Bulk, Interrupt
Etc. Battery Charging 1.2 support, Pull-up / Pull-down and D+ / D- line resistor built-in
Multiplier and divider /
multiply-accumulator circuit
16*16,32 / 32,16*16+32
DMA 2
Other peripheral functions LVD, POR, Key return LVD, POR
Safety function WDT, TRAP instruction, Flash memory CRC operation, RAM parity error detection,
Illegal memory access, Frequency detection, RAM guard, SFR guard, A/D test

 

Pin Count / Memory Size Lineup:

RL78/G1C-Pin Count/Memory Size

 

Block Diagram:

RL78/G1C Block Diagram

Below you will find information to support the development of your application.
You can find an explanation of orderable part numbers here.

 

Resources for Software and Hardware

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FAQ Frequently asked questions and useful hints for development.
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Video Watch videos related to this product.

 

Software Design Support

Title Description
CS+ An integrated development environment that can be used for coding, assembling/compiling, and simulation. (Also included with Renesas Starter Kits.)
e2 studio Renesas eclipse embedded studio, known as e² studio, is a complete development and debug environment based on the popular Eclipse CDT project.
E1 A standard Renesas on-chip debugging emulator that enables users to carry out ample debugging for real development at low cost. (Also included with starter kits.)
Renesas Starter Kit All the development tools you need for MCU evaluation and getting started. Also recommended for training.

 

Hardware Design Support

Title Description
Characteristics data Information on observed values. Please use this as reference data when developing your set.
Oscillation circuit characteristics The resonators for which the operation is verified and their oscillator constants are shown below.
You can filter the sample codes and application notes that are displayed using the below filters.

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