参数资料
型号: MC9S12K
厂商: 飞思卡尔半导体(中国)有限公司
英文描述: Microcontrollers
中文描述: 微控制器
文件页数: 85/126页
文件大小: 7307K
代理商: MC9S12K
Device User Guide — 9S12KT256DGV1/D V01.09
61
Freescale Semiconductor
2.3.5 XFC — PLL Loop Filter Pin
PLL loop filter. Please ask your Motorola representative for the interactive application note to compute
PLL loop filter elements. Any current leakage on this pin must be avoided.
Figure 2-4 PLL Loop Filter Connections
2.3.6 BKGD / TAGHI / MODC — Background Debug, Tag High, and Mode Pin
The BKGD/TAGHI/MODC pin is used as a pseudo-open-drain pin for the background debug
communication. In MCU expanded modes of operation when instruction tagging is on, an input low on
this pin during the falling edge of E-clock tags the high half of the instruction word being read into the
instruction queue. It is used as a MCU operating mode select pin during reset. The state of this pin is
latched to the MODC bit at the rising edge of RESET.
2.3.7 PAD[15:8] / AN[15:8] — Port AD Input Pins [15:8]
PAD15 - PAD8 are general purpose input pins and analog inputs of the single analog to digital converter
with 16 channels on MC9S12KG128(64)(32), MC9S12KL128(64) and MC9S12KC128(64). PAD15 -
PAD8 are general purpose input pins and analog inputs of the analog to digital converter with 8 channels
(ATD1) on MC9S12KT256 and MC9S12KG256.
2.3.8 PAD[7:0] / AN[7:0] — Port AD Input Pins [7:0]
PAD7 - PAD0 are general purpose input pins and analog inputs of the single analog to digital converter
with 16 channels on MC9S12KG128(64)(32), MC9S12KL128(64) and MC9S12KC128(64). PAD7 -
PAD0 are general purpose input pins and analog inputs of the analog to digital converter with 8 channels
(ATD0) on MC9S12KT256 and MC9S12KG256.
2.3.9 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.
MCU
XFC
R
CS
CP
VDDPLL
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