MSP43020X3 Datasheet, PDF (48/92 Pages) Texas Instruments – MIXED SIGNAL MICROCONTROLLER

MSP430F20x3
MSP430F20x2
MSP430F20x1
SLAS491H – AUGUST 2005 – REVISED AUGUST 2011
www.ti.com
JTAG and Spy-Bi-Wire Interface
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
f_SBW
t_SBW,Low
t_SBW,En
t_SBW,Ret
f_TCK
PARAMETER
Spy-Bi-Wire input frequency
Spy-Bi-Wire low clock pulse length
Spy-Bi-Wire enable time (TEST high to acceptance of first clock edge⁽¹⁾)
Spy-Bi-Wire return to normal operation time
TCK input frequency⁽²⁾
V_CC
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V/3 V
2.2 V
3V
MIN
0
0.025
15
0
0
TYP MAX UNIT
20 MHz
15 µs
1 µs
100 µs
5 MHz
10 MHz
R_Internal
Internal pulldown resistance on TEST
2.2 V/3 V
25
60
90 kΩ
(1) Tools accessing the Spy-Bi-Wire interface need to wait for the maximum t_SBW,En time after pulling the TEST/SBWCLK pin high before
applying the first SBWCLK clock edge.
(2) f_TCK may be restricted to meet the timing requirements of the module selected.
JTAG Fuse⁽¹⁾
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
V_CC(FB)
Supply voltage during fuse-blow condition
T_A = 25°C
2.5
V_FB
Voltage level on TEST for fuse blow
6
I_FB
Supply current into TEST during fuse blow
t_FB
Time to blow fuse
MAX
7
100
1
UNIT
V
V
mA
ms
(1) Once the fuse is blown, no further access to the JTAG/Test, Spy-Bi-Wire, and emulation feature is possible, and JTAG is switched to
bypass mode.
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