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ST90158M9T1 Fiches technique(PDF) 3 Page - STMicroelectronics

No de pièce ST90158M9T1
Description  8/16-BIT MCU FAMILY WITH UP TO 64K ROM/OTP/EPROM AND UP TO 2K RAM
Download  190 Pages
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Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

ST90158M9T1 Fiches technique(HTML) 3 Page - STMicroelectronics

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Table of Contents
9
4.2.1
Divide by Zero trap . . . . . . . . . . . . . . . . .... . . . ... . . . . . . . . . . . . . ... .. . . .. . 48
4.2.2
Segment Paging During Interrupt Routines . .... .. . . . . . . . . . . . . . ... .. . .... 49
4.3 INTERRUPT PRIORITY LEVELS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.4 PRIORITY LEVEL ARBITRATION . . . . . . ... .. ... .. .. ... .. .. ... .. .. .... . . ... .. 49
4.4.1
Priority level 7 (Lowest) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
4.4.2
Maximum depth of nesting . . . . . . ... .. ... .. .. . . . . . . . . . . . . . . .... . . ... .. 49
4.4.3
Simultaneous Interrupts . . . . . . . . . . . . .... . . . ... . . . . . . . . . . . . . ... ... . . . . 49
4.4.4
Dynamic Priority Level Modification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.5 ARBITRATION MODES . . . . . . . . . . . . . . . . . .... . ... .. . . . . .... . . . ... . . . . . . . . . . 50
4.5.1
Concurrent Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
4.5.2
Nested Mode . . . . . . .... . ... .. . . ... ... . ... .. . . ... .. . . ... . ... .. .. ... 53
4.6 EXTERNAL INTERRUPTS . . . . . . . . . . . . . . . . . . . . . .... .... ... . . . . . . . . ... .. . . . 55
4.7 TOP LEVEL INTERRUPT . . . . . . . . . . . . . . . . . .... ... . . . . . . . . . . . . . . . . . . . . ... .. 57
4.8 ON-CHIP PERIPHERAL INTERRUPTS . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . . ... .. 57
4.9 INTERRUPT RESPONSE TIME . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . . . . ... .. 58
4.10 INTERRUPT REGISTERS . . .... . ... .. . . . . .... .... .. . . . . . . . . . . . . . ... .. . .... 59
5 ON-CHIP DIRECT MEMORY ACCESS (DMA) . . . . . . . ... . . . . . . . . . .... ... . . . . . . . . . . . . 63
5.1 INTRODUCTION . . . . . . . . . . . . . .... . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. 63
5.2 DMA PRIORITY LEVELS . . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . .... 63
5.3 DMA TRANSACTIONS . . . . . . . . . . . . . . ... .. ... .. .. ... .. .. ... .. .. .... . . ... .. 64
5.4 DMA CYCLE TIME . . . . . . . . . . . . . . . .... . ... .. .. .. . . . . . . . . . . . . ... . . . .... . ... 66
5.5 SWAP MODE . . . . . . . . . . . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . .... 66
5.6 DMA REGISTERS . . . . . . . . . . . . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . . . . ... .. 67
6 RESET AND CLOCK CONTROL UNIT (RCCU) . . . .... .... .. . . . . . . . . . . . . . ... .. . .... 68
6.1 INTRODUCTION . . . . . . . . . . . . . .... . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. 68
6.2 CLOCK CONTROL UNIT . . . . . . . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . .. . ... .. 68
6.2.1
Clock Control Unit Overview . . . . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. 68
6.3 CLOCK MANAGEMENT . . . . . . . . . . . . . ... . . . . ... .. ... .. .. ... .. . ... .. . . ... . . 69
6.3.1
PLL Clock Multiplier Programming . . . . .... .... .. . . . . . . . . . . . . . ... .. . .... 70
6.3.2
CPU Clock Prescaling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6.3.3
Peripheral Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
6.3.4
Low Power Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... . ... 71
6.3.5
Interrupt Generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .... .... .. . . . . . . . . . . 71
6.4 CLOCK CONTROL REGISTERS . . . . . . . . . . . . . . . . . .... .... ... . . . . . . . . ... .. . . . 74
6.5 OSCILLATOR CHARACTERISTICS . . . . . . . . . . . .... . . ... . . . . ... .. ... .. .. ... .. 77
6.6 RESET/STOP MANAGER . . . . . . .... . . ... .. .... ... . . . . . . . . . . . . . . . . . .. . ... .. 79
6.6.1
RESET Pin Timing . . . . . . . . . . . . . . . . .... . . . ... . . . . . . . . . . . . . ... ... . . . . 80
6.7 EXTERNAL STOP MODE . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . .... 80
7 EXTERNAL MEMORY INTERFACE (EXTMI) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
7.1 INTRODUCTION . . . . . . . . . . . . . .... . . ... .. ... .. .. . . . . . . . ... .. .. .... . . ... .. 81
7.2 EXTERNAL MEMORY SIGNALS . . . . . . . . . . . . . . . . . .... . . . .... .... .. . .... .. . . . 82
7.2.1
AS: Address Strobe . . . . . . . . . . . . . . . . . . . . . .... . . . . ... . ... .. . . ... .. . . . 82
7.2.2
DS: Data Strobe . . . . .... . ... .. . . . . .... .... .. . .... .. . . . . . . ... .. . .... 82
7.2.3
DS2: Data Strobe 2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
7.2.4
RW: Read/Write . . . . .... . ... .. . . . . . ... . ... .. . . ... .. . .... . ... .. . . ... 85
7.2.5
BREQ, BACK: Bus Request, Bus Acknowledge . . . . . . . . . . . . . . . . . . . .... . ... 85
7.2.6
PORT 0 . . . . . . .... . . . . .. . . . . . . . . . . . . . ... ... . . . . . . . . . . ... .. .. . . . . . . 86


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