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| 型號： | SX20AC75 |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| 中文描述： | 配置通信控制器與電子工程/閃存程序存儲器，在系統(tǒng)編程能力和片上調(diào)試 |
| 文件頁數(shù)： | 29/52頁 |
| 文件大?。?/td> | 688K |
| 代理商： | SX20AC75 |
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2000 Scenix Semiconductor, Inc. All rights reserved.
- 29 -
www.scenix.com
SX18AC/SX20AC/SX28AC/SX18AC75/SX20AC75/SX28AC75
14.0
DIFFERENT RESET OPERATIONS
The effect of different reset operation on a register
depends on the register and the type of reset operation.
Some registers are initialized to specific values, some
are left unchanged, some are undefined, and some are
initialized to an unknown value.
REGISTER STATES UPON
A register that starts with an unknown value should be
initialized by the software to a known value; you cannot
simply test the initial state and rely on it starting in that
state consistently.
Table 14-1 lists the SX registers and shows the state of
each register upon different reset.
Table 14-1. Register States Upon Different Resets
Register
Power-On
Wakeup
Brown-out
Watchdog
Timeout
MCLR
W
Undefined
Unchanged
Undefined
Unchanged
Unchanged
OPTION
FFh
FFh
FFh
FFh
FFh
MODE
0Fh
0Fh
0Fh
0Fh
0Fh
RTCC (01h)
Undefined
Unchanged
Undefined
Unchanged
Unchanged
PC (02h)
FFh
FFh
FFh
FFh
FFh
STATUS (03h)
Bits 0-2: Unde-
fined
Bits 3-4: 11
Bits 5-7: 000
Bits 0-2: Un-
changed.
Bits 3-4: Unch.
Bits 5-7: 000
Bits 0-4: Unde-
fined
Bits 5-7: 000
Bits 0-2: Un-
changed
Bits 3-4: (Note 1)
Bits 5-7: 000
Bits 0-2: Un-
changed
Bits 3-4: (Note 2)
Bits 5-7: 000
FSR (04h)
Undefined
Bits 0-6: Un-
changed
Bit 7: 1
Bits 0-6: Unde-
fined
Bit 7: 1
Bits 0-6: Un-
changed
Bit 7: 1
Bits 0-6: Un-
changed
Bit 7: 1
RA/RB/RC
Direction
FFh
FFh
FFh
FFh
FFh
RA/RB/RC Data
Undefined
Unchanged
Undefined
Unchanged
Unchanged
Other File Registers -
SRAM
Undefined
Unchanged
Undefined
Unchanged
Unchanged
CMP_B
Bits 0, 6-7: 1
Bits 1-5: Unde-
fined
Bits 0, 6-7: 1
Bits 1-5: Unde-
fined
Bits 0, 6-7: 1
Bits 1-5: Unde-
fined
Bits 0, 6-7: 1
Bits 1-5: Unde-
fined
Bits 0, 6-7: 1
Bits 1-5: Unde-
fined
WKPND_B
Undefined
Unchanged
Undefined
Unchanged
Unchanged
WKED_B
FFh
FFh
FFh
FFh
FFh
WKEN_B
FFh
FFh
FFh
FFh
FFh
ST_B/ST_C
FFh
FFh
FFh
FFh
FFh
LVL_A/LVL_B/LVL_C
FFh
FFh
FFh
FFh
FFh
PLP_A/PLP_B/PLP_C
FFh
FFh
FFh
FFh
FFh
Watchdog Counter
Undefined
Unchanged
Undefined
Unchanged
Unchanged
NOTE:
1. Watchdog reset during power down mode: 00 (TO, PD)
Watchdog reset during Active mode: 01 (TO, PD)
NOTE:
2. External reset during power down mode: 10 (TO, PD)
External reset during Active mode: Unchanged (TO, PD)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SX20AC75-I/DP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX20AC75-I/PQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX20AC75-I/SO | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX20AC75-I/SS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX20AC75-I/TQ | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
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