- 您現在的位置：買賣IC網 > PDF目錄382369 > P87LPC762 (NXP Semiconductors N.V.) Low power, low price, low pin count 20 pin microcontroller with 2 kbyte OTP PDF資料下載
參數資料
| 型號： | P87LPC762 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Low power, low price, low pin count 20 pin microcontroller with 2 kbyte OTP |
| 中文描述： | 低功耗，低價格，低管腳數的2字節檢察官辦公室20引腳微控制器 |
| 文件頁數： | 22/57頁 |
| 文件大?。?/td> | 312K |
| 代理商： | P87LPC762 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁當前第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁
Philips Semiconductors
Preliminary data
87LPC762
Low power, low price, low pin count (20 pin)
microcontroller with 2 kbyte OTP
2001 Oct 26
19
Open Drain Output
Configuration
The open drain output configuration turns off all pull-ups and only
drives the pull-down transistor of the port driver when the port latch
contains a logic 0. To be used as a logic output, a port configured in
this manner must have an external pull-up, typically a resistor tied to
V
DD
. The pull-down for this mode is the same as for the
quasi-bidirectional mode.
The open drain port configuration is shown in Figure 11.
Push-Pull Output
Configuration
The push-pull output configuration has the same pull-down structure
as both the open drain and the quasi-bidirectional output modes, but
provides a continuous strong pull-up when the port latch contains a
logic 1. The push-pull mode may be used when more source current
is needed from a port output.
The push-pull port configuration is shown in Figure 12.
The three port pins that cannot be configured are P1.2, P1.3, and
P1.5. The port pins P1.2 and P1.3 are permanently configured as
open drain outputs. They may be used as inputs by writing ones to
their respective port latches. P1.5 may be used as a Schmitt trigger
input if the 87LPC762 has been configured for an internal reset and
is not using the external reset input function RST.
Additionally, port pins P2.0 and P2.1 are disabled for both input and
output if one of the crystal oscillator options is chosen. Those
options are described in the Oscillator section.
The value of port pins at reset is determined by the PRHI bit in the
UCFG1 register. Ports may be configured to reset high or low as
needed for the application. When port pins are driven high at reset,
they are in quasi-bidirectional mode and therefore do not source
large amounts of current.
Every output on the 87LPC762 may potentially be used as a 20 mA
sink LED drive output. However, there is a maximum total output
current for all ports which must not be exceeded.
All ports pins of the 87LPC762 have slew rate controlled outputs. This
is to limit noise generated by quickly switching output signals. The
slew rate is factory set to approximately 10 ns rise and fall times.
The bits in the P2M1 register that are not used to control
configuration of P2.1 and P2.0 are used for other purposes. These
bits can enable Schmitt trigger inputs on each I/O port, enable
toggle outputs from Timer 0 and Timer 1, and enable a clock output
if either the internal RC oscillator or external clock input is being
used. The last two functions are described in the Timer/Counters
and Oscillator sections respectively. The enable bits for all of these
functions are shown in Figure 13.
Each I/O port of the 87LPC762 may be selected to use TTL level
inputs or Schmitt inputs with hysteresis. A single configuration bit
determines this selection for the entire port. Port pins P1.2, P1.3,
and P1.5 always have a Schmitt trigger input.
SU01160
PORT
PIN
INPUT
DATA
PORT LATCH
DATA
N
Figure 11. Open Drain Output
SU01161
PORT
PIN
V
DD
INPUT
DATA
PORT LATCH
DATA
N
P
Figure 12. Push-Pull Output
相關PDF資料 |
PDF描述 |
|---|---|
| P87LPC768 | Low Power, Low System Cost 80C51 MCU with ADC and PWM |
| P87LPC768BN | Low Power, Low System Cost 80C51 MCU with ADC and PWM |
| P88-3004 | TONER VACUUM STD 220/240V |
| P88-3005 | TONER FILTER STD 0.3 MICRON |
| P88-3010 | TONER VACUUM XPRS 220/240V |
相關代理商/技術參數 |
參數描述 |
|---|---|
| P87LPC762BD | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low power, low price, low pin count 20 pin microcontroller with 2 kbyte OTP |
| P87LPC762BD,512 | 功能描述:8位微控制器 -MCU 80C51 2K/128 OTP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT |
| P87LPC762BD512 | 制造商:NXP Semiconductors 功能描述:IC 8BIT MCU 80C51 20MHZ SOIC-20 |
| P87LPC762BDH | 功能描述:8位微控制器 -MCU 80C51 2K/128 OTP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT |
| P87LPC762BDH,512 | 功能描述:8位微控制器 -MCU 80C51 2K/128 OTP RoHS:否 制造商:Silicon Labs 核心:8051 處理器系列:C8051F39x 數據總線寬度:8 bit 最大時鐘頻率:50 MHz 程序存儲器大小:16 KB 數據 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 安裝風格:SMD/SMT |
發布緊急采購，3分鐘左右您將得到回復。