TMS570LS1225 Datasheet, PDF (47/176 Pages) Texas Instruments – 16- and 32-Bit RISC Flash Microcontroller

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TMS570LS1225
SPNS191B – OCTOBER 2012 – REVISED FEBRUARY 2015
Table 5-3. Thermal Resistance Characteristics (ZWT Package)
RΘ_JA
RΘ_JB
RΘ_JC
Ψ_JT
Junction-to-free air thermal resistance, Still
air (includes 5x5 thermal via cluster in 2s2p
PCB connected to 1st ground plane)
Junction-to-board thermal resistance
Junction-to-case thermal resistance
Junction-to-package top, Still air (includes
5x5 thermal via cluster in 2s2p PCB
connected to 1st ground plane)
°C/W
18.8
14.1
7.1
0.33
5.10 Output Buffer Drive Strengths
Table 5-4. Output Buffer Drive Strengths
LOW-LEVEL OUTPUT CURRENT,
I_OL for V_I=V_OLmax
or
HIGH-LEVEL OUTPUT CURRENT,
I_OH for V_I=V_OHmin
8 mA
SIGNALS
FRAYTX2, FRAYTX1, FRAYTXEN1, FRAYTXEN2,
MIBSPI5CLK, MIBSPI5SOMI[0], MIBSPI5SOMI[1], MIBSPI5SOMI[2], MIBSPI5SOMI[3],
MIBSPI5SIMO[0], MIBSPI5SIMO[1], MIBSPI5SIMO[2], MIBSPI5SIMO[3],
TMS, TDI, TDO, RTCK,
SPI4CLK, SPI4SIMO, SPI4SOMI, nERROR,
N2HET2[1], N2HET2[3], N2HET2[5], N2HET2[7], N2HET2[9], N2HET2[11], N2HET2[13],
N2HET2[15]
ECAP1, ECAP4, ECAP5, ECAP6
EQEP1I, EQEP1S, EQEP2I, EQEP2S
EPWM1A, EPWM1B, EPWM1SYNCO, ETPW2A, EPWM2B, EPWM3A, EPWM3B,
EPWM4A, EPWM4B, EPWM5A, EPWM5B, EPWM6A, EPWM6B, EPWM7A, EPWM7B
EMIF_ADDR[0:12], EMIF_BA[0:1], EMIF_CKE, EMIF_CLK, EMIF_DATA[0:15], EMIF_nCAS,
EMIF_nCS[0:4], EMIF_nDQM[0:1], EMIF_nOE, EMIF_nRAS, EMIF_nWAIT, EMIF_nWE,
EMIF_RNW
4 mA
TEST,
MIBSPI3SOMI, MIBSPI3SIMO, MIBSPI3CLK, MIBSPI1SIMO, MIBSPI1SOMI, MIBSPI1CLK,
ECAP2, ECAP3
nRST
2 mA zero-dominant
AD1EVT,
CAN1RX, CAN1TX, CAN2RX, CAN2TX, CAN3RX, CAN3TX,
GIOA[0-7], GIOB[0-7],
LINRX, LINTX,
MIBSPI1nCS[0], MIBSPI1nCS[1-3], MIBSPI1nENA, MIBSPI3nCS[0-3], MIBSPI3nENA,
MIBSPI5nCS[0-3], MIBSPI5nENA,
N2HET1[0-31], N2HET2[0], N2HET2[2], N2HET2[4], N2HET2[5], N2HET2[6], N2HET2[7],
N2HET2[8], N2HET2[9], N2HET2[10], N2HET2[11], N2HET2[12], N2HET2[13], N2HET2[14],
N2HET2[15], N2HET2[16], N2HET2[18],
SPI2nCS[0], SPI2nENA, SPI4nCS[0], SPI4nENA
selectable 8 mA / 2 mA
ECLK,
SPI2CLK, SPI2SIMO, SPI2SOMI
The default output buffer drive strength is 8 mA for these signals.
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Specifications
47