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参数资料
| 型号： | DS83C530-ENL |
| 厂商： | DALLAS SEMICONDUCTOR |
| 元件分类： | Microcontroller |
| 英文描述： | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP52 |
| 封装： | TQFP-52 |
| 文件页数： | 34/44页 |
| 文件大小： | 754K |
| 代理商： | DS83C530-ENL |
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DS87C530/DS83C530
4 of 44
PLCC
TQFP
SIGNAL
NAME
DESCRIPTION
38
31
PSEN
PSEN
- Output. The Program Store Enable output. This signal is a
chip enable for optional external ROM memory. PSEN will
provide an active low pulse and is driven high when external
ROM is not being accessed.
39
32
ALE
ALE - Output. The Address Latch Enable output latches the
external address LSB from the multiplexed address/data bus on
Port 0. This signal is commonly connected to the latch enable of
an external 373 family transparent latch. ALE has a pulse width of
1.5 XTAL1 cycles and a period of four XTAL1 cycles. ALE is
forced high when the device is in a Reset condition. ALE can be
disabled and forced high by writing ALEOFF=1 (PMR.2). ALE
operates independently of ALEOFF during external memory
accesses.
50
49
48
47
46
45
44
43
42
41
40
39
38
37
36
P0.0 (AD0)
P0.1 (AD1)
P0.2 (AD2)
P0.3 (AD3)
P0.4 (AD4)
P0.5 (AD5)
P0.6 (AD6)
P0.7 (AD7)
Port 0 (AD0-7) - I/O. Port 0 is an open-drain, 8-bit bi-directional
I/O port. As an alternate function Port 0 can function as the
multiplexed address/data bus to access off-chip memory. During
the time when ALE is high, the LSB of a memory address is
presented. When ALE falls to a logic 0, the port transitions to a bi-
directional data bus. This bus is used to read external ROM and
read/ write external RAM memory or peripherals. When used as a
memory bus, the port provides active high drivers. The reset
condition of Port 0 is tri-state. Pullup resistors are required when
using Port 0 as an I/O port.
3-10
48-52,
1-3
P1.0 - P1.7
Port 1 - I/O. Port 1 functions as both an 8-bit bi-directional I/O
port and an alternate functional interface for Timer 2 I/O, new
External Interrupts, and new Serial Port 1. The reset condition of
Port 1 is with all bits at a logic 1. In this state, a weak pullup 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
pullup. When software writes a 0 to any port pin, the device will
activate a strong pulldown 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 pullup. Once the momentary strong driver turns
off, the port again becomes the output high (and input) state. The
alternate modes of Port 1 are outlined as follows.
3
4
5
6
7
8
9
10
48
49
50
51
52
1
2
3
Port
Alternate
Function
P1.0
T2
External I/O for Timer/Counter 2
P1.1
T2EX
Timer/Counter 2 Capture/Reload Trigger
P1.2
RXD1
Serial Port 1 Input
P1.3
TXD1
Serial Port 1 Output
P1.4
INT2
External Interrupt 2 (Positive Edge Detect)
P1.5
INT3
External Interrupt 3 (Negative Edge Detect)
P1.6
INT4
External Interrupt 4 (Positive Edge Detect)
P1.7
INT5
External Interrupt 5 (Negative Edge Detect)
相关PDF资料 |
PDF描述 |
|---|---|
| DS87C530-ECL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP52 |
| DS87C520-MCL | 8-BIT, OTPROM, MICROCONTROLLER, PDIP40 |
| DS87C520-QNL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC44 |
| DS87C520-QCL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQCC44 |
| DS87C520-ECL | 8-BIT, OTPROM, 33 MHz, MICROCONTROLLER, PQFP44 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS83C530-ENL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS83C530-QCL | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Micro with Real Time Clock |
| DS83C530-QCL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS83C530-QNL | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
| DS83C530-QNL+ | 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:EPROM/ROM Microcontrollers with Real-Time Clock |
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