 |
Electronic Components Datasheet Search |
|
|
Electronic Components Datasheet Search |
|
MC9S12C128CFU Datasheet(PDF) 52 Page - Freescale Semiconductor, Inc |
|
||||||||||||||||||||||||||||||
MC9S12C128CFU Datasheet(HTML) 52 Page - Freescale Semiconductor, Inc |
|
|
52 / 680 page  Chapter 1 MC9S12C and MC9S12GC Device Overview (MC9S12C128) 52 MC9S12C-Family / MC9S12GC-Family Freescale Semiconductor Rev 01.23 1.3.4.6 PA[7:0] / ADDR[15:8] / DATA[15:8] — Port A I/O Pins PA7–PA0 are general purpose input or output pins,. In MCU expanded modes of operation, these pins are used for the multiplexed external address and data bus. PA[7:1] pins are not available in the 48-pin package version. PA[7:3] are not available in the 52-pin package version. 1.3.4.7 PB[7:0] / ADDR[7:0] / DATA[7:0] — Port B I/O Pins PB7–PB0 are general purpose input or output pins. In MCU expanded modes of operation, these pins are used for the multiplexed external address and data bus. PB[7:5] and PB[3:0] pins are not available in the 48-pin nor 52-pin package version. 1.3.4.8 PE7 / NOACC / XCLKS — Port E I/O Pin 7 PE7 is a general purpose input or output pin. During MCU expanded modes of operation, the NOACC signal, when enabled, is used to indicate that the current bus cycle is an unused or “free” cycle. This signal will assert when the CPU is not using the bus.The XCLKS is an input signal which controls whether a crystal in combination with the internal Colpitts (low power) oscillator is used or whether Pierce oscillator/external clock circuitry is used. The state of this pin is latched at the rising edge of RESET. If the input is a logic low the EXTAL pin is configured for an external clock drive or a Pierce oscillator. If input is a logic high a Colpitts oscillator circuit is configured on EXTAL and XTAL. Since this pin is an input with a pull-up device during reset, if the pin is left floating, the default configuration is a Colpitts oscillator circuit on EXTAL and XTAL. Figure 1-11. Colpitts Oscillator Connections (PE7 = 1) Figure 1-12. Pierce Oscillator Connections (PE7 = 0) MCU C2 EXTAL XTAL Crystal or VSSPLL Ceramic Resonator C1 CDC1 1. Due to the nature of a translated ground Colpitts oscillator a DC voltage bias is applied to the crystal. Please contact the crystal manufacturer for crystal DC. MCU EXTAL XTAL RS 1 RB VSSPLL Crystal or Ceramic Resonator C2 C1 1. RS can be zero (shorted) when used with higher frequency crystals, refer to manufacturer’s data. |
Similar Part No. - MC9S12C128CFU |
|
Similar Description - MC9S12C128CFU |
|
|
Link URL |
| Privacy Policy |
| ALLDATASHEET.COM |
| Does ALLDATASHEET help your business so far? [ DONATE ] |
About Alldatasheet | Advertisement | Datasheet Upload | Contact us | Privacy Policy | Link Exchange | Manufacturer List All Rights Reserved©Alldatasheet.com |
| Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
|
Family Site : ic2ic.com |
icmetro.com |
English ▼
English
Chinese
German
Japanese
Russian
Korean
Spanish
French
Italian
Portuguese
Polish
Vietnamese
Indian
Mexican
British
New Zealand
