45181 Parallax Inc, 45181 Datasheet - Page 109
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
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11 Appendix A: SX Features
11.1 Introduction
The SX chip is a fully static CMOS MPU conservatively rated for DC to 50 (or 75) MHz operation. The
SX provides 2K words of on-chip E²Flash program memory (4K words in SX48/52). In Turbo mode, all
instructions are single cycle except program branches, which take three cycles, and IREAD, which takes
four cycles.
11.2 CPU Features
11.3 Peripheral and I/O Features
Single cycle instruction execution (20 ns cycle time @ 50 MHz, 13.3 ns @ 75 MHz)
DC to 50 MHz operation (75 MHz on selected chips)
User selectable clock options: (Internal R/C, External R/C, resonator, crystal oscillator or crystal-
oscillator pack)
Internal R/C oscillator (31 KHz to 4 MHz, +/- 8% accuracy)
43 single-word basic instructions
2048 x 12-bits (4096 x 12-bits in SX48/52) E²Flash program memory rated for 10,000 rewrite cycles
Up to 137 bytes (262 bytes in SX48/52) of directly, or indirectly, addressable RAM
Selectable 8-level hardware stack
Fixed interrupt response time: 60 ns internal, 100 ns external
Hardware context save/restore of PC, W, STATUS, and FSR on interrupt.
Multi-Input Wake-Up (MIWU) on 8 pins
In-system programming via OSC pins
Single-step and breakpoint debugging via OSC2 pin
Analog comparator (RB0 out, RB1 in-, RB2 in+)
Built-in brown-out detector (On/Off, 4.2V) (4.2, 2.6, 2.2, Off in SX48/52)
W mappable into RTCC space for flexibility
Nine sources of interrupts (17 in SX48/52)
1998 UL compliance and fast lookup provided through run-time readable code
Every pin programmable as input or output
Inputs are each TTL or CMOS level selectable
All pins include selectable internal pull-ups (~20 k to V
RB, RC, RD and RE inputs each selectable as Schmitt Trigger
SX-Key/Blitz Development System Manual 2.0 Parallax, Inc. Page 109
11 Appendix A: SX Features
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