45181 Parallax Inc, 45181 Datasheet - Page 170
45181
Manufacturer Part Number
45181
Description
SX TECH TOOL KIT NO POWER
Manufacturer
Parallax Inc
Series
SXr
Type
Microcontrollerr
Datasheet
1.45180.pdf
(184 pages)
Specifications of 45181
Contents
SX Book, SX Key, SX Tech Board, Samples, Resonators, Cable and Manual
Product
Microcontroller Basic Stamps
Operating Supply Voltage
5 V
For Use With/related Products
SX MCUs
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
- Current page: 170 of 184
- Download datasheet (2Mb)
15 Appendix E: SX Data Sheet
15.3.2.8
EN
OE
Rsvd
RES
15.3.3 Port C Registers
There are four registers used to configure the I/O pins of Port C. The TRIS_C register configures the
data direction of the Port C pins as input or output. The LVL_C register configures the input pins as
TTL or CMOS voltage level. The PLP_C register enables/disables pull up resistors on Port C input pins.
The ST_C register enables/disables the Schmitt-Trigger inputs on Port C input pins. To access these
registers you must first write a particular value to the MODE register. Please refer to
Mode Register to find the values required in the MODE register to access the Port C Registers. Note: All
the bits in the following registers are set to ‘1’ on power up.
15.3.3.1
A bit set to ‘1’ in this register sets the corresponding I/O port pin to input (high z) mode.
A bit set to ‘0’ in this register sets the corresponding I/O port pin to output mode.
15.3.3.2
A bit set to ‘1’ in this register sets the input level of the corresponding port pin to TTL.
A bit set to ‘0’ in this register sets the input level of the corresponding port pin to CMOS.
Page 170 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
-
-
-
-
CMP_B – Comparator Enable Register
TRIS_C – Data Direction Register
LVL_C - TTL/CMOS Select Register
Comparator Enable, 0 = enabled, 1 = disabled
Comparator Output Enable, 0 = enabled, 1 = disabled
Reserved for future use
Comparator Result (EN must = 0)
RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0
RC7 RC6 RC5 RC4 RC3 RC2 RC1 RC0
EN
7
7
7
OE Rsvd Rsvd Rsvd Rsvd Rsvd RES
6
6
6
5
5
5
TRIS_C
CMP_B
4
4
4
LVL_C
3
3
3
2
2
2
1
1
1
0
0
0
Table
32 – SX20/28
Related parts for 45181
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Terminals 3 Pin Single Row Header (long)
Manufacturer:
Parallax Inc
Part Number:
Description:
Headers & Wire Housings 16 Pin Single Row Header
Manufacturer:
Parallax Inc
Part Number:
Description:
Microcontroller Modules & Accessories DISCONTINUED BY PARALLAX
Manufacturer:
Parallax Inc
Part Number:
Description:
BOOK UNDERSTANDING SIGNALS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
COMPETITION RING FOR SUMOBOT
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
TEXT INFRARED REMOTE FOR BOE-BOT
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
Microcontroller Modules & Accessories DISCONTINUED BY PARALLAX
Manufacturer:
Parallax Inc
Part Number:
Description:
BOOK UNDERSTANDING SIGNALS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
BOARD EXPERIMENT+LCD NX-1000
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
IC MCU 2K FLASH 50MHZ SO-18
Manufacturer:
Parallax Inc
Datasheet: