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C541U
Siemens C541U Manuals
Manuals and User Guides for Siemens C541U. We have
1
Siemens C541U manual available for free PDF download: User Manual
Siemens C541U User Manual (192 pages)
8-Bit CMOS Microcontroller
Brand:
Siemens
| Category:
Microcontrollers
| Size: 2.01 MB
Table of Contents
Table of Contents
4
Introduction
8
Pin Configuration
11
Pin Definitions and Functions
12
Fundamental Structure
16
Cpu
17
CPU Timing
19
Memory Organization
22
Data Memory, "Data Space
23
General Purpose Registers
23
Program Memory, "Code Space
23
Special Function Registers
23
Accessing External Memory
32
External Bus Interface
32
Role of P0 and P2 as Data/Address Bus
32
External Program Memory Access
34
Overlapping External Data and Program Memory Spaces
34
PSEN, Program Store Enable
34
Timing
34
ALE, Address Latch Enable
35
Enhanced Hooks Emulation Concept
36
Hardware Reset Operation
38
Reset and System Clock Operation
38
Fast Internal Reset after Power-On
40
Hardware Reset Timing
42
Oscillator and Clock Circuit
43
On-Chip Peripheral Components
46
Parallel I/O
46
Port Structures
47
Basic Port Circuirty of Port 1 to 3
48
SSC Port Pins of Port 1
51
Port 0 Circuitry
53
Port 0 and Port 2 Used as Address/Data Bus
54
Alternate Functions
55
Port Handling
57
Port Timing
57
Port Loading and Interfacing
58
Read-Modify-Write Feature of Ports 1,2 and 3
59
Timers/Counters
60
Timer/Counter 0 and 1
60
Mode 0
64
SSC Interface
68
General Operation of the SSC
69
Enable/Disable Control
69
Baudrate Generation (Master Mode Only)
70
Write Collision Detection
70
Master/Slave Mode Selection
71
Data/Clock Timing Relationships
72
Master Mode Operation
72
Slave Mode Operation
73
Register Description
74
USB Module
79
Transfer Modes
80
USB Memory Buffer Modes
81
Overview
81
Single Buffer Mode
81
USB Write Access
82
USB Read Access
84
Dual Buffer Mode
87
USB Memory Buffer Organization
94
USB Memory Buffer Address Generation
95
Initialization of USB Module
96
Control Transfer
98
Data Stage
98
Setup Stage
98
Status Stage
98
Register Set
99
Global Registers
99
Device Registers
104
Low Speed Mode
105
Initialization
120
Control Transfer
121
Data Stage
121
Setup Stage
121
Status Stage
121
Transfer Modes
121
Interrupt Transfer
122
Register Set
123
USB Low Speed Interrupts
128
On-Chip USB Transceiver
129
Detection of Connected Devices
131
Detach / Attach Detection
132
Bus-Powered Mode
132
Interrupt System
134
Self-Powered Mode
132
Interrupt Enable Registers
137
Interrupt Registers
137
Interrupt Request / Control Flags
143
Interrupt Prioritiy Registers
149
Interrupt Priority Level Structure
150
How Interrupts Are Handled
151
External Interrupts
153
Interrupt Response Time
155
Fail Safe Mechanisms
156
Programmable Watchdog Timer
156
Input Clock Selection
157
Watchdog Timer Control / Status Flags
158
Refreshing the Watchdog Timer
159
Starting the Watchdog Timer
159
Watchdog Reset and Watchdog Status Flag
159
Oscillator Watchdog Unit
160
Functionality of the Oscillator Watchdog Unit
161
Fast Internal Reset after Power-On
162
Power Saving Modes
164
Idle Mode
166
Entering Idle Mode
167
Exit from Idle Mode
167
Power down Mode
168
Entering Power down Mode
169
Exit from Power down Mode
170
Exit Via Pin P3.2/INT0
171
Exit Via UBS Bus
171
OTP Memory Operation
172
Programming Configuration
172
Pin Configuration
173
Pin Definitions
174
Programming Mode Selection
176
Basic Programming Mode Selection
176
OTP Memory Access Mode Selection
177
Program / Read OTP Memory Bytes
178
Lock Bits Programming / Read
180
Access of Version Bytes
182
OTP Verify with Protection Level
183
Index
186
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