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UPSD3312D Datasheet(PDF) 235 Page - STMicroelectronics

Part # UPSD3312D
Description  fast 8032 MCU with programmable logic
PDF  272 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

UPSD3312D Datasheet(HTML) 235 Page - STMicroelectronics

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UPSD33xx
PSD module
Doc ID 9685 Rev 7
235/272
Figure 79.
JTAG chain in UPSD33xx package
27.5.3
In-system programming
The ISP function can use two different configurations of the JTAG interface:
●
4-pin JTAG: TDI, TDO, TCK, TMS
●
6-pin JTAG: Signals above plus TSTAT, TERR
At power-up, the four basic JTAG signals are all inputs, waiting for a command to appear on
the JTAG bus from programming or test equipment. When the enabling command is
received, TDO becomes an output and the JTAG channel is fully functional. The same
command that enables the JTAG channel may optionally enable the two additional signals,
TSTAT and TERR.
JTAG TDI
JTAG TMS
JTAG TCK
JTAG TDO
TDI
TMS TCK
TDO
TDO
TMS TCK
TDI
PC3 / TSTAT
PC4 / TERR
TSTAT
TERR
OPTIONAL
JTAG TAP
CONTROLLER
JTAG TAP
CONTROLLER
RESET_IN
OPTIONAL
DEBUG
RESET
RST
8032 MCU
MCU MODULE
PSD MODULE
MAIN
FLASH
MEMORY
2ND
FLASH
MEMORY
PLD
UPSD33XX
IEEE 1149.1
AI09184b



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