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DS5000-8-16 の電気的特性と機能

DS5000-8-16のメーカーはDallas Semiconducotrです、この部品の機能は「Soft Microcontroller」です。


製品の詳細 ( Datasheet PDF )

部品番号 DS5000-8-16
部品説明 Soft Microcontroller
メーカ Dallas Semiconducotr
ロゴ Dallas Semiconducotr ロゴ 




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DS5000-8-16 Datasheet, DS5000-8-16 PDF,ピン配置, 機能
DS5000(T)
DS5000(T)
Soft Microcontroller Module
FEATURES
8–bit 8051 compatible Microcontroller adapts to task–
at–hand:
– 8 or 32K bytes of nonvolatile RAM for program
and/or data memory storage
– Initial downloading of software in end system
via on–chip serial port
– Capable of modifying its own program and/or
data memory in end use
Crashproof operation:
– Maintains all nonvolatile resources for 10 years
in the absence of VCC
– Power–fail reset
– Early warning power–fail interrupt
– Watchdog timer
Software Security Feature:
– Executes encrypted software to prevent unau-
thorized disclosure
On–chip, full–duplex serial I/O ports
Two on–chip timer/event counters
32 parallel I/O lines
Compatible with industry standard 8051 instruction
set and pinout
Optional Permanently Powered Real–Time Clock
(DS5000T)
PIN ASSIGNMENT
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
RST
RXD P3.0
TXD P3.1
INT0 P3.2
INT1 P3.3
T0 P3.4
T1 P3.5
WR P3.6
RD P3.7
XTAL2
XTAL1
GND
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40 VCC
39 P0.0 AD0
38 P0.1 AD1
37 P0.2 AD2
36 P0.3 AD3
35 P0.4 AD4
34 P0.5 AD5
33 P0.6 AD6
32 P0.7 AD7
31 EA
30 ALE
29 PSEN
28 P2.7 A15
27 P2.6 A14
26 P2.5 A13
25 P2.4 A12
24 P2.3 A11
23 P2.2 A10
22 P2.1 A9
21 P2.0 A8
40–PIN ENCAPSULATED PACKAGE
DESCRIPTION
The DS5000(T) Soft Microcontroller Module is a fully
8051 compatible 8–bit CMOS microcontroller that offers
“softness” in all aspects of its application. This is ac-
complished through the comprehensive use of nonvola-
tile technology to preserve all information in the ab-
sence of system VCC. The internal program/data
memory space is implemented using either 8K or
32K bytes of nonvolatile CMOS SRAM. Furthermore,
internal data registers and key configuration registers
are also nonvolatile. An optional real time clock gives
permanently powered timekeeping. The clock keeps
time to a hundredth of a second using an on–board
crystal.
021998 1/19

1 Page





DS5000-8-16 pdf, ピン配列
DS5000(T)
PIN DESCRIPTION
PIN NUMBER
DESCRIPTION
1–8 P1.0 – P1.7. General purpose I/O Port 1.
9 RST – Active high reset input. A logic 1 applied to this pin will activate a reset state. This pin
is pulled down internally so this pin can be left unconnected if not used.
10 P3.0 RXD. General purpose I/O port pin 3.0. Also serves as the receive signal for the on
board UART. This pin should not be connected directly to a PC COM port.
11 P3.1 TXD. General purpose I/O port pin 3.1. Also serves as the transmit signal for the on
board UART. This pin should not be connected directly to a PC COM port.
12 P3.2 INT0. General purpose I/O port pin 3.2. Also serves as the active low External
Interrupt 0.
13 P3.3 INT1. General purpose I/O port pin 3.3. Also serves as the active low External
Interrupt 1.
14 P3.4 T0. General purpose I/O port pin 3.4. Also serves as the Timer 0 input.
15 P3.5 T1. General purpose I/O port pin 3.5. Also serves as the Timer 1 input.
16 P3.6 WR. General purpose I/O port pin. Also serves as the write strobe for Expanded
bus operation.
17 P3.7 RD. General purpose I/O port pin. Also serves as the read strobe for Expanded bus
operation.
18, 19
XTAL2, XTAL1. Used to connect an external crystal to the internal oscillator. XTAL1 is the
input to an inverting amplifier and XTAL2 is the output.
20
21–28
GND. Logic ground.
P2.0–P2.7. General purpose I/O Port 2. Also serves as the MSB of the Expanded Address
bus.
29 PSEN – Program Store Enable. This active low signal is used to enable an external program
memory when using the Expanded bus. It is normally an output and should be unconnected
if not used. PSEN also is used to invoke the Bootstrap Loader. At this time, PSEN will be
pulled down externally. This should only be done once the DS5000(T) is already in a reset
state. The device that pulls down should be open drain since it must not interfere with PSEN
under normal operation.
30 ALE – Address Latch Enable. Used to de–multiplex the multiplexed Expanded Address/Data
bus on Port 0. This pin is normally connected to the clock input on a ’373 type transparent
latch. When using a parallel programmer, this pin also assumes the PROG function for pro-
gramming pulses.
31 EA – External Access. This pin forces the DS5000(T) to behave like an 8031. No internal
memory (or clock) will be available when this pin is at a logic low. Since this pin is pulled down
internally, it should be connected to +5V to use NV RAM. In a parallel programmer, this pin
also serves as VPP for super voltage pulses.
021998 3/19


3Pages


DS5000-8-16 電子部品, 半導体
DS5000(T)
PROGRAM LOADING CONFIGURATIONS Figure 3
PROGRAM
ADDRESS
VCC GND
DS5000
A7–A0
P1.7–
P1.0
P0.7–
P0.0
D7–D0
PROGRAM
DATA IN/VERIFY
DATA OUT
A11–A8
P2.3–
P2.0
P3.7–
P3.4
A15–A12
PROGRAM
ADDRESS
PROGRAM
CONTROL
EA/VPP
ALE/PROG
P2.7
P2.6
P2.5
XTAL1
XTAL2
RST
PSEN
R<2K
11.059 MHz
VCC GND
DS5000
P1.7–
P1.0
P0.7–
P0.0
P2.5–
P2.0
P3.7–
P3.2
P2.6
P2.7
TXD
RXD
DRIVE/
RCV
RS232C
XTAL1
XTAL2
RST
PSEN
R<2K
PARALLEL
LOADING
Table 1 summarizes the selection of the available Paral-
lel Program Load cycles. The timing associated with
these cycles is illustrated in the electrical specs.
SERIAL BOOTSTRAP LOADER
The Serial Program Load Mode is the easiest, fastest,
most reliable, and most complete method of initially
loading application software into the DS5000(T) nonvol-
atile RAM. Communication can be performed over a
standard asynchronous serial communications port. A
typical application would use a simple RS232C serial in-
terface to program the DS5000(T) as a final production
procedure. The hardware configuration which is re-
quired for the Serial Program Load mode is illustrated in
Figure 3. Port pins 2.7 and 2.6 must be either open or
pulled high to avoid placing the DS5000(T) in a parallel
load cycle. Although an 11.0592 MHz crystal is shown
in Figure 3, a variety of crystal frequencies and loader
baud rates are supported, shown in Table 2. The serial
loader is designed to operate across a three–wire inter-
face from a standard UART. The receive, transmit, and
ground wires are all that are necessary to establish
communication with the DS5000(T).
The Serial Bootstrap Loader implements an easy–to–
use command line interface which allows an application
SERIAL
LOADING
program in an Intel hex representation to be loaded into
and read back from the device. Intel hex is the typical
format which existing 8051 cross–assemblers output.
The serial loader responds to single character com-
mands which are summarized below:
COMMAND
C
D
F
K
L
R
T
U
V
W
Z
P
G
FUNCTION
Return CRC–16 checksum of em-
bedded RAM
Dump Intel Hex File
Fill embedded RAM block with
constant
Load 40–bit Encryption Key
Load Intel Hex File
Read MCON register
Trace (Echo) incoming Intel Hex
data
Clear Security Lock
Verify Embedded RAM with in-
coming Intel Hex
Write MCON register
Set Security Lock
Put a value to a port
Get a value from a port
021998 6/19

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
DS5000-8-12

Soft Microcontroller

Dallas Semiconducotr
Dallas Semiconducotr
DS5000-8-16

Soft Microcontroller Module

Dallas Semiconducotr
Dallas Semiconducotr
DS5000-8-16

Soft Microcontroller

Dallas Semiconducotr
Dallas Semiconducotr


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