Features and Performance
1-3
Figure 1-1
Am186EM Microcontroller Block Diagram
Note:
* All PIO signals are shared with other physical pins. See the pin descriptions in Chapter 3 and Table
3-1 on page 3-9 for information on shared functions.
S2–S0
Interrupt
Control Unit
Timer Control
Unit
DMA
Unit
Bus
Interface
Unit
Execution
Unit
Chip-Select
Unit
Clock and
Power
Management
Unit
Control
Registers
16-Bit Count
Registers
Max Count A
Registers
16-Bit Count
Registers
20-Bit Destination
Pointers
20-Bit Source
Pointers
Control
Registers
Control
Registers
Control
Registers
0
1 (WDT)
2
0
1
Max Count B
Registers
Refresh
Control
Unit
Control
Registers
Control
Registers
Control
Registers
CLKOUTB
CLKOUTA
INT4
INT3/INTA1/IRQ
INT2/INTA0
INT1/SELECT
INT0
TMROUT0
TMROUT1
DRQ0
DRQ1
V
CC
GND
TMRIN0
TMRIN1
ARDY
SRDY
DT/R
DEN
HOLD
HLDA
Asynchronous
Serial Port
Synchronous Serial
Interface
TXD
RXD
SCLK
SDATA
SDEN0 SDEN1
NMI
A19–A0
AD15–AD0
ALE
BHE/ADEN
WR
WLB
WHB
RD
RES
LCS/ONCE0
MCS2–MCS0
PCS6/A2
PCS3–PCS0
PCS5/A1
UCS/ONCE1
X2
X1
Control
Registers
PSRAM
Control
Unit
MCS3/RFSH
PIO
Unit
PIO31–
PIO0*
Co
ntrol
R
egi
ste
rs
S6/
UZI
CLKDIV2
Содержание AM186EM
Страница 1: ...Am186 EM and Am188 EM Microcontrollers User s Manual...
Страница 4: ...iv...
Страница 12: ...Table of Contents xii...
Страница 62: ...Peripheral Control Block 4 10...
Страница 76: ...Chip Select Unit 5 14...
Страница 122: ...Timer Control Unit 8 8...
Страница 136: ...DMA Controller 9 14...
Страница 144: ...Asynchronous Serial Port 10 8...
Страница 158: ...Programmable I O Pins 12 6...
Страница 186: ...Index I 12...