參數(shù)資料
型號: MCF52221
廠商: 飛思卡爾半導體(中國)有限公司
英文描述: Microcontroller Data Sheet
中文描述: 微控制器數(shù)據(jù)表
文件頁數(shù): 24/56頁
文件大?。?/td> 811K
代理商: MCF52221
MCF52223 ColdFire Microcontroller Data Sheet, Rev. 1
Preliminary
MCF52223 Family Configurations
Freescale Semiconductor
24
1.8
External Interrupt Signals
Table 8
describes the external interrupt signals.
1.9
Queued Serial Peripheral Interface (QSPI)
Table 9
describes QSPI signals.
1.10 USB On-the-Go
This device is compliant with industry standard USB 2.0 specification.
Table 7. Clocking Modes
CLKMOD[1:0]
XTAL
Configure the clock mode.
00
0
PLL disabled, clock driven by external oscillator
00
1
PLL disabled, clock driven by on-chip oscillator
01
N/A
PLL disabled, clock driven by crystal
10
0
PLL in normal mode, clock driven by external oscillator
10
1
PLL in normal mode, clock driven by on-chip oscillator
11
N/A
PLL in normal mode, clock driven by crystal
Table 8. External Interrupt Signals
Signal Name
Abbreviation
Function
I/O
External Interrupts
IRQ[7:1]
External interrupt sources.
I
Table 9. Queued Serial Peripheral Interface (QSPI) Signals
Signal Name
Abbreviation
Function
I/O
QSPI Synchronous
Serial Output
QSPI_DOUT Provides the serial data from the QSPI and can be programmed to be
driven on the rising or falling edge of QSPI_CLK.
O
QSPI Synchronous
Serial Data Input
QSPI_DIN
Provides the serial data to the QSPI and can be programmed to be
sampled on the rising or falling edge of QSPI_CLK.
I
QSPI Serial Clock
QSPI_CLK
Provides the serial clock from the QSPI. The polarity and phase of
QSPI_CLK are programmable.
O
Synchronous Peripheral
Chip Selects
QSPI_CS[3:0] QSPI peripheral chip selects that can be programmed to be active
high or low.
O
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