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參數(shù)資料
| 型號(hào)： | PSD935F3V-15U |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | Configurable Memory System on a Chip for 8-Bit Microcontrollers |
| 中文描述： | 在8片位微控制器可配置存儲(chǔ)系統(tǒng) |
| 文件頁(yè)數(shù)： | 62/91頁(yè) |
| 文件大?。?/td> | 488K |
| 代理商： | PSD935F3V-15U |
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9.5.3.4 Reset of Flash Erase and Programming Cycles
An external reset on the RESET pin will also reset the internal Flash memory state
machine. When the Flash is in programming or erase mode, the RESET pin will terminate
the programming or erase operation and return the Flash back to read mode in tNLNH-A
(minimum 25 μs) time.
9.6 Programming In-Circuit using the JTAG-ISP Interface
The JTAG-ISP interface on the PSD935G2 can be enabled on Port E (see Table 29). All
memory (Flash and Flash Boot Block), PLD logic, and PSD configuration bits may be
programmed through the JTAG-ISC interface. A blank part can be mounted on a printed
circuit board and programmed using JTAG-ISP.
The standard JTAG signals (IEEE 1149.1) are TMS, TCK, TDI, and TDO. Two additional
signals, TSTAT and TERR, are optional JTAG extensions used to speed up program and
erase operations.
PSD935G2
PSD9XX Family
61
Port E Pin
PE0
PE1
PE2
PE3
PE4
PE5
JTAG Signals
TMS
TCK
TDI
TDO
TSTAT
TERR
Description
Mode Select
Clock
Serial Data In
Serial Data Out
Status
Error Flag
Table 29. JTAG Port Signals
The
PSD935G2
Functional
Blocks
(cont.)
*
SR_cod bit in the VM Register are always cleared to zero on power on or warm reset.
Port Configuration
MCU I/O
PLD Output
Power On Reset
Input Mode
Valid after internal
PSD configuration
bits are loaded
Tri-stated
Tri-stated
Warm Reset
Input Mode
Valid
Power Down Mode
Unchanged
Depend on inputs to
PLD (address are
blocked in PD mode)
Not defined
Tri-stated
Address Out
Data Port
Tri-stated
Tri-stated
Table 28. Status During Power On Reset, Warm Reset and Power Down Mode
Register
PMMR0, 2
VM Register*
Power On Reset
Cleared to
“
0
”
Initialized based on
the selection in
PSDsoft
Configuration Menu.
Cleared to
“
0
”
Warm Reset
Unchanged
Initialized based on
the selection in
PSDsoft
Configuration Menu.
Cleared to
“
0
”
Power Down Mode
Unchanged
Unchanged
All other registers
Unchanged
By default, on a blank PSD (as shipped from factory or after erasure), four pins on Port E
are enabled for the basic JTAG signals TMS, TCK, TDI, and TDO.
See ST Application Note AN1153 for more details on JTAG In-System-Programming.
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