Introduction; General Considerations; Type Definitions; Wakeup Handler - Infineon SP37 Function Manual

1

Introduction

1.1

General Considerations

This document describes the ROM Library functions that are available in the SP37 Version A5 step device. When
the ROM Library Function
for the ROM revision.
In order for the application to use these ROM Library functions, the following files have to be included to the
software project:
• SP37_ROMLibrary.h (the header file the function prototypes)
• SP37_ROMLibrary.lib (the precompiled ROM Library functions)
Notes
1. The application must ensure that no IDLE-RESUME event source is active before any call of the
ROM Library_functions.
2. All typical charge consumptions and typical execution times stated throughout this document were obtained
from measurements of 10 devices at
3. Analysis of General Register, SFR, and Stack resource usage was performed on object code generated by
Keil uVision3 (Assembler version: 8.00d, Compiler version: 8.08, Linker version: 6.05,
Hex converter version: 2.6.0.1).
1.2

Type definitions

The following table defines the parameter types used throughout this document.
Table 1 Definition of types
Type
Unsigned char
Signed char
Unsigned int
Signed int
Unsigned long
Signed long
The Keil C51 Compiler stores data in big endian format (MSB first).
1.3

Wakeup Handler

The Wakeup-Handler is executed every time the device wakes up from POWER DOWN state. Possible wakeup
sources are listed in SP37 Datasheet [1].
Table 2 Wakeup Handler
Parameter
Wakeup from POWER DOWN state
(independent of Wakeup source)
ROM Library Function Guide
"FW_Revision_Nb()" on Page 101
V
= 3.0 V and
BAT
Description
8 bit value without sign bit
8 bit value with sign bit
16 bit value without sign bit
16 bit value with sign bit
32 bit value without sign bit
32 bit value with sign bit
Symbol
t
wakeup
Tire Pressure Monitoring Sensor
is called, these devices will return the value 0A32
T
= 25°C
Ambient
Range
Minimum
0
-128
0
-32,768
0
-2,147,483,648
Values
Min. Typ. Max.
– 0.85 1.8
17
Introduction
Maximum
255
127
65,535
32,767
4,294,967,295
2,147,483,647
Unit Note / Test Condition
ms
Revision 1.0, 2011-12-15
SP37
H