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參數(shù)資料
| 型號： | DS80C320-ENL |
| 廠商： | DALLAS SEMICONDUCTOR |
| 元件分類： | Microcontroller |
| 英文描述： | 8-BIT, MROM, 33 MHz, MICROCONTROLLER, PQFP44 |
| 封裝： | TQFP-44 |
| 文件頁數(shù)： | 34/42頁 |
| 文件大?。?/td> | 736K |
| 代理商： | DS80C320-ENL |
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DS80C320/DS80C323
4 of 42
PIN DESCRIPTION Table 1
DIP
PLCC
TQFP
SIGNAL NAME
DESCRIPTION
40
44
38
VCC
VCC - +5V. (+3V DS80C323)
20
22, 23
16, 17
GND
GND - Digital circuit ground.
910
4
RST
RST - Input. The RST input pin contains a Schmitt voltage input to
recognize external active high Reset inputs. The pin also employs an
internal pulldown resistor to allow for a combination of wired OR
external Reset sources. An RC is not required for power-up, as the
device provides this function internally.
18
19
20
21
14
15
XTAL2
XTAL1
XTAL1, XTAL2 - The crystal oscillator pins XTAL1 and XTAL2
provide support for parallel resonant, AT cut crystals. XTAL1 acts
also as an input in the event that an external clock source is used in
place of a crystal. XTAL2 serves as the output of the crystal
amplifier.
29
32
26
PSEN
PSEN
- Output. The Program Store Enable output. This signal is
commonly connected to external ROM memory as a chip enable.
PSEN
will provide an active low pulse width of 2.25 XTAL1 cycles
with a period of four XTAL1 cycles. PSEN is driven high when data
memory (RAM) is being accessed through the bus and during a reset
condition.
30
33
27
ALE
ALE – Output. The Address Latch Enable output functions as a
clock to latch the external address LSB from the multiplexed
address/data bus. 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.
39
38
37
36
35
34
33
32
43
42
41
40
39
38
37
36
37
36
35
34
33
32
31
30
AD0
AD1
AD2
AD3
AD4
AD5
AD6
AD7
AD0-7 (Port 0) - I/O. Port 0 is the multiplexed address/data bus.
During the time when ALE is high, the LSB of a memory address is
presented. When ALE falls, 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. The Port 0 has no true port
latch and can not be written directly by software. The reset condition
of Port 0 is high. No pullup resistors are needed.
1-8
2-9
40-44
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 once again becomes the
output high (and input) state. The alternate modes of Port 1 are
outlined as follows:
Port
Alternate
Function
12
40
P1.0
T2
External I/O for Timer/Counter 2
23
41
P1.1
T2EX
Timer/Counter 2 Capture/Reload Trigger
34
42
P1.2
RXD1
Serial Port 1 Input
45
43
P1.3
TXD1
Serial Port 1 Output
56
44
P1.4
INT2
External Interrupt 2 (Positive Edge Detect)
67
1
P1.5
INT3
External Interrupt 3 (Negative Edge Detect)
78
2
P1.6
INT4
External Interrupt 4 (Positive Edge Detect)
89
3
P1.7
INT5
External Interrupt 5 (Negative Edge Detect)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS80C320-ENG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP44 |
| DS80C320-MCG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PDIP40 |
| DS80C320-QNG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQCC44 |
| DS80C320-ECG | 8-BIT, MROM, 25 MHz, MICROCONTROLLER, PQFP44 |
| DS80C320-FNG | 8-BIT, 25 MHz, MICROCONTROLLER, PQFP44 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS80C320-ENL+ | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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(shí)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 |
| DS80C320-ENR | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C320-FCD | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:High-Speed Microcontroller User Guide |
| DS80C320-FCG | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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(shí)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 |
| DS80C320-FCG+ | 功能描述:8位微控制器 -MCU High-Speed Low-Power 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(shí)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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