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參數(shù)資料
| 型號： | P83CL781 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| 中文描述： | 低電壓8 - UART及位微控制器的I2C總線 |
| 文件頁數(shù)： | 10/76頁 |
| 文件大?。?/td> | 342K |
| 代理商： | P83CL781 |
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1997 Mar 14
10
Philips Semiconductors
Product specification
Low voltage 8-bit microcontrollers with
UART and I
2
C-bus
P83CL781; P83CL782
PSEN
29
26
Program Store Enable:
Read strobe to external Program Memory. When
executing code out of external Program Memory, PSEN is activated twice each
machine cycle. However, during each access to external Data Memory two
PSEN activations are skipped.
Address Latch Enable:
Latches the low byte of the address during accesses to
external memory. It is activated every six oscillator periods and may be used for
external timing or clocking purposes.
Not connected.
External Access:
When EA is held HIGH, the CPU executes out of the internal
Program Memory (unless the Program Counter exceeds 3FFFH). When EA is
held LOW, the CPU executes out of external Program Memory regardless of the
value of the program counter.
Port 0:
8-bit open-drain bidirectional I/O port (P0.7 to P0.0). As an open-drain
output port it can sink/source 8 LS TTL loads. Port 0 pins that have logic 1s
written to them float, and in this state will function as high-impedance inputs.
Low-order addressing:
AD7 to AD0 provide the multiplexed low-order
address and data bus during accesses to external memory. In this application
the pins use the strong internal pull-ups when emitting logic 1s.
ALE
30
27
n.c.
EA
28
29
31
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
V
DD
n.c.
32
33
34
35
36
37
38
39
40
30
31
32
33
34
35
36
37
38
39
Power supply
.
Not connected.
SYMBOL
PIN
DESCRIPTION
DIP40
QFP44
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| P83CL781HFH | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL781HFP | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL782 | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL782HDH | Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL782HDP | Low voltage 8-bit microcontrollers with UART and I2C-bus |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| P83CL781HDH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL781HFB | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P83CL781HFH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage 8-bit microcontrollers with UART and I2C-bus |
| P83CL781HFN | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:8-Bit Microcontroller |
| P83CL781HFP | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage 8-bit microcontrollers with UART and I2C-bus |
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