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參數(shù)資料
| 型號： | MC94MX21DVKN3R2 |
| 廠商： | FREESCALE SEMICONDUCTOR INC |
| 元件分類： | 微控制器/微處理器 |
| 英文描述： | 350 MHz, MICROPROCESSOR, PBGA289 |
| 封裝： | 14 X 14 MM, 1.41 MM HEIGHT, 0.65 MM PITCH, LEAD FREE, PLASTIC, BGA-289 |
| 文件頁數(shù)： | 5/98頁 |
| 文件大小： | 1326K |
| 代理商： | MC94MX21DVKN3R2 |
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Signal Descriptions
MC94MX21 Technical Data, Rev. 1.
5
Freescale Semiconductor
13
PWM
PWMO
PWM Output. This signal is multiplexed with PC_SPKOUT of PCMCIA, as well as TOUT2 and TOUT3
of the General Purpose Timer module.
General Purpose Input/Output
PF[16]
Dedicated GPIO. When unused, program this signal as an input with the on-chip pull-up resistor enabled.
Keypad
KP_COL[7:0]
Keypad Column selection signals. KP_COL[7:6] are multiplexed with UART2_CTS and UART2_TXD
respectively. Alternatively, KP_COL6 is also available on the internal factory test signal TEST_WB2. The
Function Multiplexing Control Register in the System Control chapter must be used in conjunction with
programming the GPIO multiplexing (to select the alternate signal multiplexing) to choose which signal
KP_COL6 is available.
KP_ROW[7:0]
Keypad Row selection signals. KP_ROW[7:6] are multiplexed with UART2_RTS and UART2_RXD
signals respectively. Alternatively, KP_ROW7 and KP_ROW6 are available on the internal factory test
signals TEST_WB0 and TEST_WB1 respectively. The Function Multiplexing Control Register in the
System Control chapter must be used in conjunction with programming the GPIO multiplexing (to select
the alternate signal multiplexing) to choose which signals KP_ROW6 and KP_ROW7 are available.
Noisy Supply Pins
NVDD
Noisy Supply for the I/O pins. There are six (6) I/O voltages, NVDD1 through NVDD6.
NVSS
Noisy Ground for the I/O pins
Supply Pins – Analog Modules
VDDA
Supply for analog blocks
QVSS (internally
connected to AVSS)
Quiet GND for analog blocks (QVSS and AVSS are synonymous)
Internal Power Supplies
QVDD
Power supply pins for silicon internal circuitry
QVSS
Quiet GND pins for silicon internal circuitry
QVDDX
Power supply pin for the ARM core. Externally connect directly to QVDD
Table 2. i.MX21 Signal Descriptions (Continued)
Signal Name
Function/Notes
Because
of
an
order
from
the
United
States
International
Trade
Commission,
BGA-packaged
product
lines
and
part
numbers
indicated
here
currently
are
not
available
from
Freescale
for
import
or
sale
in
the
United
States
prior
to
September
2010:
MC94MX21DVKN3
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC94MX21DVKN3R2 | 制造商:Freescale Semiconductor 功能描述:32-bit Embedded Microprocessors |
| MC950 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:INTEGRATED CIRCUITS |
| MC951 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:INTEGRATED CIRCUITS |
| MC952 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:INTEGRATED CIRCUITS |
| MC953 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:INTEGRATED CIRCUITS |
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