CC2540F128 Datasheet, PDF (13/33 Pages) Texas Instruments – 2.4-GHz Bluetooth® low energy System-on-Chip

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DEBUG INTERFACE AC CHARACTERISTICS
T_A = –40°C to 125°C, VDD = 2 V to 3.6 V
PARAMETER
TEST CONDITIONS
f_{clk_dbg}
t₁
t₂
t₃
Debug clock frequency (see Figure 4)
Allowed high pulse on clock (see Figure 4)
Allowed low pulse on clock (see Figure 4)
EXT_RESET_N low to first falling edge on debug
clock (see Figure 6)
t₄
Falling edge on clock to EXT_RESET_N high (see
Figure 6)
t₅
EXT_RESET_N high to first debug command (see
Figure 6)
t₆
Debug data setup (see Figure 5)
t₇
Debug data hold (see Figure 5)
t₈
Clock-to-data delay (see Figure 5)
Load = 10 pF
CC2540F128, CC2540F256
SWRS084 – OCTOBER 2010
MIN TYP MAX UNIT
12 MHz
35
ns
35
ns
167
ns
83
ns
83
ns
2
ns
4
ns
30 ns
Time
DEBUG_ CLK
P2_2
t₁
t₂
1/f_{clk_dbg}
Figure 4. Debug Clock – Basic Timing
T0436-01
Time
DEBUG_ CLK
P2_2
RESET_N
t₃
t₄
t₅
Figure 5. Debug Enable Timing
T0437-01
Copyright © 2010, Texas Instruments Incorporated
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