參數(shù)資料
型號: MC9S12DT256VFU
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Microcontroller Unit (MCU)
中文描述: 微控制器(MCU)
文件頁數(shù): 56/124頁
文件大?。?/td> 2125K
代理商: MC9S12DT256VFU
MC9S12DP512 Device Guide V01.23
56
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 2-2 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. This pin has a permanently enabled pull-up device.
2.3.7 PAD15 / AN15 / ETRIG1 — Port AD Input Pin of ATD1
PAD15 is a general purpose input pin and analog input AN7 of the analog to digital converter ATD1. It
can act as an external trigger input for the ATD1.
2.3.8 PAD[14:08] / AN[14:08] — Port AD Input Pins of ATD1
PAD14 - PAD08 are general purpose input pins and analog inputs AN[6:0] of the analog to digital
converter ATD1.
2.3.9 PAD7 / AN07 / ETRIG0 — Port AD Input Pin of ATD0
PAD7 is a general purpose input pin and analog input AN7 of the analog to digital converter ATD0. It can
act as an external trigger input for the ATD0.
2.3.10 PAD[06:00] / AN[06:00] — Port AD Input Pins of ATD0
PAD06 - PAD00 are general purpose input pins and analog inputs AN[6:0] of the analog to digital
converter ATD0.
MCU
XFC
R
0
C
S
C
P
VDDPLL
VDDPLL
F
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