参数资料
型号: TMS470R1A384PZ-T
厂商: Texas Instruments
文件页数: 41/62页
文件大小: 0K
描述: IC RISC MCU 384K FLASH 100-LQFP
标准包装: 90
系列: TMS470
核心处理器: ARM7
芯体尺寸: 16/32-位
速度: 48MHz
连通性: CAN,C2Slb,I²C,SCI,SPI
外围设备: DMA,PWM,WDT
输入/输出数: 53
程序存储器容量: 384KB(384K x 8)
程序存储器类型: 闪存
RAM 容量: 32K x 8
电压 - 电源 (Vcc/Vdd): 1.71 V ~ 2.05 V
数据转换器: A/D 12x10b
振荡器型: 外部
工作温度: -40°C ~ 105°C
封装/外壳: 100-LQFP
包装: 托盘
产品目录页面: 718 (CN2011-ZH PDF)
配用: 296-23003-ND - KIT DEV KICKSTART TMS470
其它名称: 296-19292
SCIn ISOSYNCHRONOUS MODE TIMINGS INTERNAL CLOCK
Timing Requirements for Internal Clock SCIn Isosynchronous Mode
(1) (2) (3)
Data Valid
SCICLK
SCITX
SCIRX
tc(SCC)
tw(SCCL)
tw(SCCH)
td(SCCH TXV)
tv(TX)
tsu(RX SCCL)
tv(SCCL RX)
SPNS110E – AUGUST 2005 – REVISED MAY 2008 ......................................................................................................................................................... www.ti.com
(BAUD + 1)
IS EVEN OR BAUD = 0
IS ODD AND BAUD
≠ 0
UNIT
MIN
MAX
MIN
MAX
Cycle time,
tc(SCC)
2tc(ICLK)
224 tc(ICLK)
3tc(ICLK)
(224 -1) tc(ICLK)
ns
SCInCLK
Pulse duration,
tw(SCCL)
0.5tc(SCC) - tf
0.5tc(SCC) + 5
0.5tc(SCC) + 0.5tc(ICLK) - tf
0.5tc(SCC) + 0.5tc(ICLK)
ns
SCInCLK low
Pulse duration,
tw(SCCH)
0.5tc(SCC) - tr
0.5tc(SCC) + 5
0.5tc(SCC) - 0.5tc(ICLK) - tr
0.5tc(SCC) - 0.5tc(ICLK)
ns
SCInCLK high
Delay time,
td(SCCH-TXV)
SCInCLK high to
10
ns
SCInTX valid
Valid time,
SCInTX data
tv(TX)
tc(SCC) - 10
ns
after SCInCLK
low
Setup time,
tsu(RX-SCCL)
SCInRX before
tc(ICLK) + tf + 20
ns
SCInCLK low
Valid time,
SCInRX data
tv(SCCL-RX)
-tc(ICLK) + tf + 20
- tc(ICLK) + tf + 20
ns
after SCInCLK
low
(1)
BAUD = 24-bit concatenated value formed by the SCI[H,M,L]BAUD registers.
(2)
tc(ICLK) = interface clock cycle time = 1/f(ICLK)
(3)
For rise and fall timings, see the "Switching Characteristics for Output Timings versus Load Capacitance" table.
A.
Data transmission/reception characteristics for isosynchronous mode with internal 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 17. SCIn Isosynchronous Mode Timing Diagram for Internal Clock
46
Copyright 2005–2008, Texas Instruments Incorporated
Product Folder Link(s): TMS470R1A384
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