參數(shù)資料
型號: TMS470R1A384PZQ
廠商: Texas Instruments
文件頁數(shù): 42/62頁
文件大小: 0K
描述: IC RISC MCU 384K FLASH 100-LQFP
標準包裝: 90
系列: TMS470
核心處理器: ARM7
芯體尺寸: 16/32-位
速度: 48MHz
連通性: CAN,C2Slb,I²C,SCI,SPI
外圍設備: DMA,PWM,WDT
輸入/輸出數(shù): 53
程序存儲器容量: 384KB(384K x 8)
程序存儲器類型: 閃存
RAM 容量: 32K x 8
電壓 - 電源 (Vcc/Vdd): 1.71 V ~ 2.05 V
數(shù)據(jù)轉換器: A/D 12x10b
振蕩器型: 外部
工作溫度: -40°C ~ 125°C
封裝/外殼: 100-LQFP
包裝: 管件
配用: 296-23003-ND - KIT DEV KICKSTART TMS470
SCIn ISOSYNCHRONOUS MODE TIMINGS EXTERNAL CLOCK
Timing Requirements for External Clock SCIn Isosynchronous Mode
(1) (2)
Data Valid
SCICLK
SCITX
SCIRX
tc(SCC)
tw(SCCH)
tw(SCCL)
td(SCCH TXV)
tv(TX)
tsu(RX SCCL)
tv(SCCL RX)
www.ti.com ......................................................................................................................................................... SPNS110E – AUGUST 2005 – REVISED MAY 2008
MIN
MAX
UNIT
tc(SCC)
Cycle time, SCInCLK(3)
8tc(ICLK)
ns
tw(SCCH)
Pulse duration, SCInCLK high
0.5tc(SCC) - 0.25tc(ICLK)
0.5tc(SCC) + 0.25tc(ICLK)
ns
tw(SCCL)
Pulse duration, SCInCLK low
0.5tc(SCC) - 0.25tc(ICLK)
0.5tc(SCC) + 0.25tc(ICLK)
ns
td(SCCH-TXV)
Delay time, SCInCLK high to SCInTX valid
2tc(ICLK) + 12 + tr
ns
tv(TX)
Valid time, SCInTX data after SCInCLK low
2tc(SCC) -10
ns
tsu(RX-SCCL)
Setup time, SCInRX before SCInCLK low
0
ns
tv(SCCL-RX)
Valid time, SCInRX data after SCInCLK low
2tc(ICLK) + 10
ns
(1)
tc(ICLK) = interface clock cycle time = 1/f(ICLK)
(2)
For rise and fall timings, see the "Switching Characteristics for Output Timings versus Load Capacitance" table.
(3)
When driving an external SCInCLK, the following must be true: tc(SCC) ≥ 8tc(ICLK).
A.
Data transmission / reception characteristics for isosynchronous mode with external clocking are similar to the
asynchronous mode. Data transmission occurs on the SCICLK rising edge, and data reception occurs on the SCICLK
falling edge.
Figure 18. SCIn Isosynchronous Mode Timing Diagram for External Clock
Copyright 2005–2008, Texas Instruments Incorporated
47
Product Folder Link(s): TMS470R1A384
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