Main
1997 Advanced Micro Devices, Inc. All rights reserved.
Trademarks
IF YOU HAVE QUESTIONS, WERE HERE TO HELP YOU. Customer Service
Hotline and World Wide Web Support
Documentation and Literature
Page
TABLE OF CONTENTS
Page
Page
Page
LIST OF FIGURES
Page
LIST OF TABLES
Page
PREFACE
INTRODUCTION AND OVERVIEW
DESIGN PHILOSOPHY
PURPOSE OF THIS MANUAL
Am186 and Am188 Family Instruction Set Manual,
INTENDED AUDIENCE
AMD DOCUMENTATION E86 Microcontroller Family
1
1.1 KEY FEATURES AND BENEFITS
1.2 DISTINCTIVE CHARACTERISTICS
Page
Features and Performance 1-4
Figure 1-1 Am186ER Microcontroller Block Diagram
Features and Performance 1-5
Figure 1-2 Am188ER Microcontroller Block Diagram
1.3 APPLICATION CONSIDERATIONS
1.3.1 Clock Generation
1.3.2 Memory Interface
1.3.3 Serial Communications Port
Page
2
2.1 REGISTER SET
Programming 2-2
Figure 2-1 Register Set
2.1.1 Processor Status Flags Register
undefined
Figure 2- 2 Processor Status Flags Register (FLAGS)
2.2 MEMORY ORGANIZATION AND ADDRESS GENERATION
2.3 I/O SPACE
2.4 INSTRUCTION SET
The Am186 and Am188 Family Instruction Set Manual
Page
Page
Page
2.5 SEGMENTS
2.6 DATA TYPES
Programming 2-9
Figure 2-5 Supported Data Types
2.7 ADDRESSING MODES
Register and Immediate Operands
Memory Operands
3
3.1 PIN DESCRIPTIONS
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
Page
3.1.1 Pins That Are Used by Emulators
3.2 BUS OPERATION
System Overview 3-19
Figure 3-1 Am186ER Microcontroller Address BusNormal Read and Write Operation
Figure 3-2 Am186ER MicrocontrollerRead and Write with Address Bus Disable In Effect
System Overview 3-20
Figure 3-3 Am188ER Microcontroller Address BusNormal Read and Write Operation
Figure 3-4 Am188ER MicrocontrollerRead and Write with Address Bus Disable In Effect
3.3 BUS INTERFACE UNIT
Am186ER and Am188ER Microcontrollers Data Sheet
3.3.1 Nonmultiplexed Address Bus
3.3.2 Byte Write Enables
3.3.3 Pseudo Static RAM (PSRAM) Support
Page
3.4 CLOCK AND POWER MANAGEMENT UNIT
3.4.1 Phase-Locked Loop (PLL)
3.4.2 Crystal-Driven Clock Source
3.4.3 External Source Clock
3.4.4 System Clocks
3.4.5 Power-Save Operation
Page
4
4.1 OVERVIEW
Peripheral Control Block 4-2
Figure 4-1 Peripheral Control Block Register Map
Gaps in offset addresses indicate reserved registers. Changed from 80C186 microcontroller.
Peripheral Control Block 4-3
Changed from 80C186 microcontroller.
Gaps in offset addresses indicate reserved registers.
4.1.1 Peripheral Control Block Relocation Register (RELREG, Offset FEh)
4.1.2 Reset Configuration Register (RESCON, Offset F6h)
4.1.3 Processor Release Level Register (PRL, Of fset F4h)
4.1.4 Power-Save Control Register (PDCON, Offset F0h)
4.2 INITIALIZATION AND PROCESSOR RESET
Note:
Registers not listed in this table are undefined at reset.
Page
5
5.1 OVERVIEW
Note: The PCS4 chip select is not implemented on the Am186ER and Am188ER microcontrollers.
A write will enable an external memory or peripheral chip select register.
5.2 CHIP SELECT TIMING
5.3 READY AND WAIT-STATE PROGRAMMING
5.4 CHIP SELECT OVERLAP
5.5 CHIP SELECT REGISTERS
5.5.1 Upper Memory Chip Select Register (UMCS, Offset A0h)
Page
5.5.2 Low Memory Chip Select Register (LMCS, Offset A2h)
Page
5.5.3 Midrange Memory Chip Select Register (MMCS, Offset A6h)
Page
5.5.4 PCS and MCS Auxiliary Register (MPCS, Offset A8h)
Page
5.5.5 Peripheral Chip Select Register (PACS, Offset A4h)
Page
Page
6
6.1 OVERVIEW
not
6.2 INTERACTION WITH EXTERNAL RAM
6.3 EMULATOR AND DEBUG MODES
6.3.1 Internal Memory Disable
6.3.2 Show Read Enable
6.4 INTERNAL MEMORY CHIP SELECT REGISTER (IMCS, OFFSET ACh)
Page
7
7.1 OVERVIEW
7.1.1 Memory Partition Register (MDRAM, Offset E0h)
7.1.2 Clock Prescaler Register (CDRAM, Offset E2h)
7.1.3 Enable RCU Register (EDRAM, Offset E4h)
8
8.1 OVERVIEW
8.1.1 Definitions of Interrupt Terms
Overall Priority
Page
8.1.2 Interrupt Conditions and Sequence
8.1.3 Interrupt Priority
8.1.4 Software Exceptions, Traps, and NMI
Page
8.1.5 Interrupt Acknowledge
8.1.6 Interrupt Controller Reset Conditions
8.2 MASTER MODE OPERATION
8.2.1 Fully Nested Mode
8.2.2 Cascade Mode
8.2.3 Special Fully Nested Mode
8.2.4 Operation in a Polled Environment
8.2.5 End-of-Interrupt Write to the EOI Register
8.3 MASTER MODE INTERRUPT CONTROLLER REGISTERS
8.3.1 INT0 and INT1 Control Registers (I0CON, Offset 38h, I1CON, Offset 3Ah)
Page
8.3.2 INT2 and INT3 Control Registers (I2CON, Offset 3Ch, I3CON, Offset 3Eh)
8.3.3 INT4 Control Register (I4CON, Offset 40h)
Page
8.3.5 Watchdog Timer Interrupt Control Register (WDCON, Offset 42h) (Master Mode)
Must
8.3.6 Serial Port Interrupt Control Register (SPICON, Offset 44h)
8.3.7 Interrupt Status Register (INTSTS, Offset 30h)
8.3.8 Interrupt Request Register (REQST, Offset 2Eh)
8.3.9 In-Service Register (INSERV, Offset 2Ch)
8.3.10 Priority Mask Register (PRIMSK, Offset 2Ah)
8.3.11 Interrupt Mask Register (IMASK, Offset 28h)
8.3.12 Poll Status Register (POLLST, Offset 26h)
8.3.13 Poll Register (POLL, Offset 24h)
8.3.14 End-of-Interrupt Register (EOI, Offset 22h)
8.4 SLAVE MODE OPERATION
8.4.1 Slave Mode Interrupt Nesting
8.4.2 Slave Mode Interrupt Controller Registers
Page
8.4.4 Interrupt Status Register (INTSTS, Offset 30h)
8.4.5 Interrupt Request Register (REQST, Offset 2Eh)
8.4.6 In-Service Register (INSERV, Offset 2Ch)
8.4.7 Priority Mask Register (PRIMSK, Offset 2Ah)
8.4.8 Interrupt Mask Register (IMASK, Offset 28h)
8.4.9 Specific End-of-Interrupt Register (EOI, Offset 22h)
8.4.10 Interrupt Vector Register (INTVEC, Offset 20h)
Page
9
9.1 OVERVIEW
9.2 PROGRAMMABLE REGISTERS
9.2.1 Timer Operating Frequency
9.2.2 Timer 0 and Timer 1 Mode and Control Registers (T0CON, Offset 56h, T1CON, Offset 5Eh)
Page
9.2.3 Timer 2 Mode and Control Register (T2CON, Offset 66h)
9.2.4 Timer Count Registers (T0CNT, Offset 50h, T1CNT, Offset 58h, T2CNT, Offset 60h)
Page
Page
10
10.1 OVERVIEW
10.2 DMA OPERATION
DMA Controller 10-2
Figure 10-1 DMA Unit Block Diagram
10.3 PROGRAMMABLE DMA REGISTERS
10.3.1 DMA Control Registers (D0CON, Offset CAh, D1CON, Offset DAh)
Page
Page
Page
Page
10.3.5 DMA Source Address High Register (High Order Bits) (D0SRCH, Offset C2h, D1SRCH, Offset D2h)
Page
10.4 DMA REQUESTS
10.4.1 Synchronization Timing
10.4.2 DMA Acknowledge
10.4.3 DMA Priority
10.4.4 DMA Programming
10.4.5 DMA Channels on Reset
Page
11
11.1 OVERVIEW
11.2 PROGRAMMABLE REGISTERS
11.2.1 Serial Port Control Register (SPCT, Offset 80h)
Page
11.2.2 Serial Port Status Register (SPSTS, Offset 82h)
11.2.3 Serial Port Transmit Data Register (SPTD, Offset 84h)
11.2.4 Serial Port Receive Data Register (SPRD, Offset 86h)
11.2.5 Serial Port Baud Rate Divisor Register (SPBAUD, Offset 88h)
phase
Page
12
12.1 OVERVIEW
12.1.1 Four-Pin Interface
12.2 PROGRAMMABLE REGISTERS
12.2.1 Synchronous Serial Status Register (SSS, Offset 10h)
12.2.2 Synchronous Serial Control Register (SSC, Offset 12h)
Page
12.2.4 Synchronous Serial Receive Register (SSR, Offset 18h)
12.3 SSI PROGRAMMING
Synchronous Serial Interface 12-8
Figure 12-5 Synchronous Serial Interface Multiple Write
Figure 12-6 Synchronous Serial Interface Multiple Read
13
13.1 OVERVIEW
Page
13.2 PIO MODE REGISTERS
13.2.1 PIO Mode 1 Register (PIOMODE1, Offset 76h)
13.2.2 PIO Mode 0 Register (PIOMODE0, Offset 70h)
13.3 PIO DIRECTION REGISTERS
Power-On Reset State
13.3.1 PIO Direction 1 Register (PDIR1, Offset 78h)
13.3.2 PIO Direction 0 Register (PDIR0, Offset 72h)
13.4 PIO DATA REGISTERS
13.4.1 PIO Data Register 1 (PDATA1, Offset 7Ah)
13.4.2 PIO Data Register 0 (PDATA0, Offset 74h)
13.5 OPEN-DRAIN OUTPUTS
Page
APPENDIX
A
Page
Page
A-4
Figure A-1 Internal Register Summary
Register Summary A-5
A-6
Register Summary A-7
A-8
Register Summary A-9
A-10
Register Summary A-11
A-12
Register Summary A-13
A-14
Register Summary A-15
A-16
INDEX
A
B
Page
C
D
E
F
G
H
I
K
L
M
N
O
P
Q
R
S
T
U
W
X
Z
Synchronous Serial Interface12-8Figure 12-5 Synchronous Serial Interface Multiple WriteFigure 12-6 Synchronous Serial Interface Multiple Read