FEATURES(1). Operation Frequency
FAST mode: 24MHz crystal oscillation with internal 48MHz PLL at 5.0V for USB mode
SLOW mode: Adjustable ext. R/C, RC oscillator at 2.0V~3.6V for battery system
(optional)
STOP mode
(2). On-Chip Memory
16k x 8 internal MASK ROM
Internal RAM 256bytes and external XRAM up to 384bytes
(3). USB interface
Compliance with the Universal Serial Bus specification v2.0 Full Speed
Built-in USB Transceiver, 3.3V regulator
Support USB Suspend /Resume and Remote Wakeup function
Endpoint 0: Control SETUP/IN/OUT transfer (each 8 bytes)
Endpoint 1: BULK-IN transfer with Pin-Pong feature (2*64 bytes)
Endpoint 2: BULK-OUT transfer with Pin-Pong feature (2*64 bytes)
Endpoint 3: BULK-IN transfer (64 bytes)
Endpoint 4: BULK-OUT transfer (64 bytes)
Endpoint 5: INTERRUPT IN transfer (8 bytes)
(5). PWM
Support 2 channels of Pulse Width Modulation (PWM) function with 8-bit resolution
(6). Reset Controller
Power On Reset, Low Voltage Reset, Watch-Dog Timer, USB Plug-out Reset
(7). SPI interface
Support Mode0, 1, 2, 3
1x Master (Tx FIFO 8 bytes, Rx FIFO 8 bytes)
Clock rate up to 6Mbps
(8). Support 32768Hz Crystal pin for Accuracy timing in low power mode (optional)
(9). Keep SRAM data when USB un-plug (need battery)
(10). I/O Ports 4 external Interrupts with wakeup function
(11). LQFP48/Die Form