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参数资料
| 型号： | SX28AC/SSU |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 2 CHANNEL(S), I2C BUS CONTROLLER, PDSO28 |
| 封装： | GREEN, PLASTIC, SSOP-28 |
| 文件页数： | 4/48页 |
| 文件大小： | 772K |
| 代理商： | SX28AC/SSU |
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2005 Ubicom, Inc. All rights reserved.
- 12 -
www.ubicom.com
SX20AC/SX28AC
4.3 OPTION Register
(Write Only; program with MOV !OPTION, W command)
Upon reset, all bits in the OPTION register are set to 1.
RTW
RTE
_IE
RTS
RTE
_ES
PSA
PS2
PS1
PS0
Bit 7
Bit 0
RTW
RTCC/W register selection:
0 = Register 01h addresses W,
unless FUSEX bit 7 = 1
1 = Register 01h addresses RTCC
RTE_IE
RTCC edge interrupt enable:
0 = RTCC roll-over interrupt is enabled,
unless FUSEX bit 7 = 1
1 = RTCC roll-over interrupt is disabled
RTS
RTCC increment select:
0 = RTCC increments on internal instruction
cycle
1 = RTCC increments upon transition on
RTCC pin
RTE_ES
RTCC edge select:
0 = RTCC increments on low-to-high transi-
tions
1 = RTCC increments on high-to-low transi-
tions
PSA
Prescaler Assignment:
0 = Prescaler is assigned to RTCC, with di-
vide rate determined by PS0-PS2 bits
1 = Prescaler is assigned to WDT, and divide
rate on RTCC is 1:1
PS2-PS0 Prescaler divider (see Table 4-2)
Table 4-2. Prescaler Divider Ratios
PS2, PS1, PS0
RTCC
Divide
Rate
Watchdog
Timer
Divide Rate
Approx.
Watchdog
Timeout (sec)
000
1:2
1:1
0.016
001
1:4
1:2
0.032
010
1:8
1:4
0.064
011
1:16
1:8
0.128
100
1:32
1:16
0.256
101
1:64
1:32
0.5
110
1:128
1:64
1.0
111
1:256
1:128
2.0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SX28AD100-I/DP | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX28AD100-I/PQ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX28AD100-I/SO | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX28AD100-I/SS | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
| SX28AD100-I/TQ | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Configurable Communications Controllers with EE/Flash Program Memory, In-System Programming Capability and On-Chip Debug |
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