參數(shù)資料
型號： DS87C530-ENL
英文描述： EPROM MICRO WITH REAL TIME CLOCK
中文描述： 微型存儲器與實時時鐘
文件頁數(shù)： 4/40頁
文件大?。?/td> 435K
代理商： DS87C530-ENL
DS87C530
022197 4/40
PLCC
DESCRIPTION
SIGNAL
NAME
TQFP
3
4
5
6
7
8
9
10
48
49
50
51
52
1
2
3
Port
Alternate
Function
P1.0
P1.1
P1.2
P1.3
P1.4
P1.5
P1.6
P1.7
T2
T2EX
RXD1
TXD1
INT2
INT3
INT4
INT5
External I/O for Timer/Counter 2
Timer/Counter 2 Capture/Reload Trigger
Serial Port 1 Input
Serial Port 1 Output
External Interrupt 2 (Positive Edge Detect)
External Interrupt 3 (Negative Edge Detect)
External Interrupt 4 (Postive Edge Detect)
External Interrupt 5 (Negative Edge Detect)
30
31
32
33
34
35
36
37
23
24
25
26
27
28
29
30
P2.0 (AD8)
P2.1 (AD9)
P2.2
(AD10)
P2.3
(AD11)
P2.4
(AD12)
P2.5
(AD13)
P2.6
(AD14)
P2.7
(AD15)
Port 2 (A8–15) – I/O
. Port 2 is a bi–directional I/O port. The reset condition
of Port 2 is logic high. In this state, a weak pull–up holds the port high. This
condition also serves as an input mode, since any external circuit that writes
to the port will overcome the weak pull–up. When software writes a 0 to any port
pin, the DS87C530 will activate a strong pull–down that remains on until either
a 1 is written or a reset occurs. Writing a 1 after the port has been at 0 will cause
a strong transition driver to turn on, followed by a weaker sustaining pull–up.
Once the momentary strong driver turns off, the port again becomes both the
output high and input state. As an alternate function Port 2 can function as MSB
of the external address bus. This bus can be used to read external ROM and
read/write external RAM memory or peripherals.
15–22
8–15
P3.0 – P3.7
Port 3 – I/O.
Port 3 functions as both an 8–bit bi–directional I/O port and an
alternate functional interface for External Interrupts, Serial Port 0, Timer 0 and
1 Inputs, and RD and WR strobes. The reset condition of Port 3 is with all bits
at a logic 1. In this state, a weak pull–up holds the port high. This condition also
serves as an input mode, since any external circuit that writes to the port will
overcome the weak pull–up. When software writes a 0 to any port pin, the
DS87C530 will activate a strong pull–down that remains on until either a 1 is
written or a reset occurs. Writing a 1 after the port has been at 0 will cause a
strong transition driver to turn on, followed by a weaker sustaining pull–up.
Once the momentary strong driver turns off, the port again becomes both the
output high and input state. The alternate modes of Port 3 are outlined below.
15
16
17
18
19
20
21
22
8
9
10
11
12
13
14
15
Port
P3.0
P3.1
P3.2
P3.3
P3.4
P3.5
P3.6
P3.7
AlternateMode
RXD0
TXD0
INT0
INT1
T0
T1
WR
RD
Serial Port 0 Input
Serial Port 0 Output
External Interrupt 0
External Interrupt 1
Timer 0 External Input
Timer 1 External Input
External Data Memory Write Strobe
External Data Memory Read Strobe
42
35
EA
EA – Input.
Connect to ground to force the DS87C530 to use an external ROM.
The internal RAM is still accessible as determined by register settings. Connect
EA to V
CC
to use internal ROM.
51
44
V
BAT
V
– Input.
Connect to the power source that maintains SRAM and RTC
when V
CC
< V
BAT
. May be connected to a 3V lithium battery or a super–cap.
See the electrical specifications for details.
相關(guān)PDF資料
PDF描述
DS87C530-KCL EPROM MICRO WITH REAL TIME CLOCK
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DS87C550 EPROM High-Speed Micro with A/D and PWM
DS87C550-QCL EPROM High-Speed Micro with A/D and PWM
DS87C550-FCL EPROM High-Speed Micro with A/D and PWM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS87C530-ENL+ 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock
DS87C530-KCL 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
DS87C530-QCL 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
DS87C530-QCL+ 功能描述:8位微控制器 -MCU EPROM MCU w/RTC RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數(shù)據(jù)總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數(shù)據(jù) RAM 大小:1 KB 片上 ADC:Yes 工作電源電壓:1.8 V to 3.6 V 工作溫度范圍:- 40 C to + 105 C 封裝 / 箱體:QFN-20 安裝風(fēng)格:SMD/SMT
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