1.1 Features
Ultra-low power consumption technology
• Standby function of MCU: HALT mode,
STOP mode, SNOOZE mode
• Standby function of RF unit: IDLE mode,
SLEEP mode
• Current drawn by the RF transceiver during
transmission
: 21 mA (typ.) with a transfer rate of 100 kbps,
2GFSK as the modulation method, +10 dBm
of power, and the MCU operating at 3.0 V in
STOP mode
: 36 mA (typ.) with a transfer rate of 100 kbps,
2GFSK as the modulation method, +13 dBm
of power, and the MCU operating at 3.0 V in
STOP mode
• Current drawn by the RF transceiver during
reception
: 6.9 mA (typ.) with a transfer rate of 100 kbps,
2GFSK as the modulation method, and the
MCU operating at 3.0 V in STOP mode
• Current drawn by the RF transceiver in SLEEP
mode (POWER DOWN mode)
: 0.1 μA (typ.) with the MCU operating at 3.0 V
in STOP mode
RL78 CPU core
• CISC architecture with 3-stage pipeline
• Minimum instruction execution time: Can be
changed from high speed (0.03125 μs: @ 32 MHz
operation with high-speed on-chip oscillator) to
ultra-low speed (30.5 μs: @ 32.768 kHz operation
with subsystem clock)
• Address space: 1 MB
• General-purpose registers: (8-bit register × 8) × 4
banks
• On-chip RAM: 24 to 48 KB