45300 Parallax Inc, 45300 Datasheet - Page 174
45300
Manufacturer Part Number
45300
Description
BOARD PROTO SX48
Manufacturer
Parallax Inc
Type
MCUr
Specifications of 45300
Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SX48
For Use With
130-28029 - KIT PARTS SMART SENSORS45111 - MANUAL FOR SX-KEY/BLITZ VER. 2.028850 - CARRIER BOARD BOARD OF EDU USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
453001
Manufacturer:
LITTELFUSE/力特
Quantity:
20 000
Company:
Part Number:
453002
Manufacturer:
LITTELFU
Quantity:
1 000
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15 Appendix E: SX Data Sheet
15.4.3 Option
The OPTION register is a run-time writable register used to configure the RTCC and the Watchdog
Timer. The size of this register is affected by the OPTIONX device setting.
15.4.4 Fuse Registers
The Fuse registers are accessible only at program time. The SX-Key Development System Software
provides a convenient interface that is easy to use to customize the SX. You may use the predefined
Page 174 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
When OPTION Extend = 0, bits 7 and 6 are implemented.
When OPTION Extend = 1, bits 7 and 6 read as ‘1’s.
RTW - If = 0, register $01 is W
RTI
RTS - If = 0, RTCC increments on internal instruction cycle
RTE - If = 0, RTCC increments on low-to-high transition
PSA - If = 0, prescaler is assigned to RTCC, divide rate determined by PS0-PS2 bits
- If = 0, RTCC roll-over interrupt is enabled
If = 1, register $01 is RTCC
If = 1, RTCC roll-over interrupt is disabled
If = 1, RTCC increments on transition of RTCC pin
If = 1, RTCC increments on high-to-low transition
If = 1, prescaler is assigned to WDT, and divide rate on RTCC is 1:1
PS2, PS1, PS0
RTW RTI RTS RTE PSA PS2 PS1 PS0
7
000
001
010
011
100
101
110
111
Figure 36 - Prescaler Division Ratios
6
5
Divide Rate
RTCC
OPTION
1:128
1:256
4
1:16
1:32
1:64
1:2
1:4
1:8
3
2
Watchdog Timer
Divide Rate
1
1:128
1:16
1:32
1:64
1:1
1:2
1:4
1:8
0
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