Описание
The S08R family offers an upward migration path from Freescale’s 68HC05 and 68HC08 architectures for applications that need lower power, more peripherals and higher performance that the enhanced S08 core offers. This family is complemented by the S08RC, S08RD, S08RE and S08RG families. Other features, depending on family member, include a carrier modulation timer for infrared remote control communications, a serial communications interface (SCI), serial peripheral interface (SPI), an analog comparator and two programmable timer channels.
8-bit HCS08 CPU Core
- Low-power technology
- Multiple power management modes including 100 nA powerdown
- Optional autowake-up from Stop 2 or Stop 3 modes with internal timer that typically requires only 300 nA additional current
- 1.8V operation
- High performance when needed
- 125 µs minimum instruction cycle time down to 1.8V at 8 MHz bus
- C-optimized architecture with multiply and divide instructions
On-Chip Debug Interface
- Single-wire background debug module (BDM)
- On-chip trace buffer with nine flexible trigger modes and multiple hardware breakpoints
- Nonintrusive emulation
Integrated Third-Generation Flash Memory
- In-application reprogrammable
- Self-timed, fast programming
- Fast Flash page erase: 20 µs (512B)
- Can program 8 bits in 20 µs while in burst mode
- 10K write/erase cycles minimum (100K typical)
- 15-year minimum data retention; 100 years typical
- Internal program/erase voltage generation
- Flash granularity: 512B Flash erase/ 2B Flash program
- Flexible block protection and security
Carrier Modulation Timer
- Consists of a carrier generator, modulator and transmitter, which generate infrared pulses
Timer with Two Programmable Channels
- Each channel programmable for
- Input capture, output compare or buffered pulse-width modulation (PWM)
- PWM can be edge- or center-aligned
Up to two Serial Communications Interfaces
- One asynchronous serial communications interface (SCI)
- Flexible 13-bit modulo-based baud rate generator
- Double-buffered receive and transmit
Analog Comparator
- Full rail-to-rail supply operation
- Selectable interrupt on rising edge, falling edge, or either rising or falling edge of comparator output
- Option to compare unknown input to a fixed internal bandgap reference voltage or external user-supplied reference
System Protection
- Selectable low-voltage detect/reset at nominal 1.8V
- Low-battery warning
- Computer operating properly (COP) watchdog timer
Up to 39 Input/Output (I/O) Lines
- Programmable pull-ups
- High-current drivers
- Eight keyboard interrupts
