Описание
The MC9S12G-Family is an optimized, automotive, 16-bit microcontroller product line focused on low-cost, high-performance, and low pin-count. This family is intended to bridge between high-end 8-bit microcontrollers and high-performance 16-bit microcontrollers, such as the MC9S12XS-Family. The MC9S12G-Family is targeted at generic automotive applications requiring CAN or LIN/J2602 communication. Typical examples of these applications include body controllers, occupant detection, door modules, seat controllers, RKE receivers, smart actuators, lighting modules, and smart junction boxes. The MC9S12G-Family uses many of the same features found on the MC9S12XS- and MC9S12P-Family, including error correction code (ECC) on flash memory, a fast analog-to-digital converter (ADC) and a frequency modulated phase locked loop (IPLL) that improves the EMC performance. The MC9S12G-Family is optimized for lower program memory sizes down to 16k. In order to simplify customer use it features an EEPROM with a small 4 bytes erase sector size. The MC9S12G-Family deliver all the advantages and efficiencies of a 16-bit MCU while retaining the low cost, power consumption, EMC, and code-size efficiency advantages currently enjoyed by users of Freescale’s existing 8-bit and 16-bit MCU families. Like the MC9S12XS-Family, the MC9S12G-Family run 16-bit wide accesses without wait states for all peripherals and memories. The MC9S12G-Family is available in 100-pin LQFP, 64-pin LQFP, 48-pin LQFP/QFN, 32-pin LQFP and 20-pin TSSOP package options and aims to maximize the amount of functionality especially for the lower pin count packages. In addition to the I/O ports available in each module, further I/O ports are available with interrupt capability allowing wake-up from stop or wait modes.
- Chip-Level Features
- S12 CPU core
- Up to 240 Kbyte on-chip flash with ECC
- Up to 4 Kbyte EEPROM with ECC
- Up to 11 Kbyte on-chip SRAM
- Phase locked loop (IPLL) frequency multiplier with internal filter
- 4–16 MHz amplitude controlled Pierce oscillator
- 1 MHz internal RC oscillator
- Timer module (TIM) supporting up to eight channels that provide a range of 16-bit input capture, output compare, counter, and pulse accumulator functions
- Module Features
- Full 16-bit data paths supports efficient arithmetic operation and high-speed math execution
- Includes many single-byte instructions. This allows much more efficient use of ROM space.
- Up to 240 Kbyte of program flash memory
- Up to 4 Kbyte EEPROM
- Up to 11 Kbytes of general-purpose RAM
- Data registers and data direction registers for ports A, B, C, D, E, T, S, M, P, J and AD when used as general-purpose I/O
- Control registers to enable/disable pull devices and select pullups/pulldowns on ports T, S, M, P, J and AD on per-pin basis
- Single control register to enable/disable pull devices on ports A, B, C, D and E, on per-port basis and on BKGD pin
- Control registers to enable/disable open-drain (wired-or) mode on ports S and M
- Loop control Pierce oscillator using a 4 MHz to 16 MHz crystal
- Trimmable internal reference clock.
- Phase-locked-loop clock frequency multiplier
