MC68HC705P9

The MC68HC705P9 is a kind of HCMOS microcontroller unit.

There are some features of MC68HC705P9 as follows: (1)four peripheral modules: 16-Bit input capture/output compare timer, synchronous serial I/O port (SIOP), 4-channel, 8-bit analog-to-digital converter (ADC) and computer operating properly (COP) watchdog; (2)20 bidirectional I/O port pins and one input-only port pin; (3)on-chip oscillator with connections for crystal, ceramic resonator and external clock; (4)2104 bytes of EPROM/OTPROM: 48 bytes of page zero EPROM/OTPROM and eight locations for user vectors; (5)128 bytes of user RAM; (6)bootloader ROM; (7)memory-mapped input/output (I/O) registers; (8)fully static operation with no minimum clock speed; (9)power-saving stop, wait, and data-retention modes.

The last one is about the maximum ratings of MC68HC705P9: (1)supply voltage, VDD: -0.3 to +7.0 V; (2)current drain per pin (excluding VDD and VSS), I: 25 mA; (3)input voltage, VIN: VSS-0.3 to VDD+0.3 V; (4)EPROM programming voltage, VPP: 16.75 V; (5)storage temperature range, TSTG: -65 to +150.