參數(shù)資料
型號(hào)： PIC18F65J50T-I/PT
廠商： Microchip Technology
文件頁數(shù)： 28/61頁
文件大?。?/td> 0K
描述： IC PIC MCU FLASH 16KX16 64TQFP
產(chǎn)品培訓(xùn)模塊： Asynchronous Stimulus
PIC18 J Series MCU Overview
標(biāo)準(zhǔn)包裝： 1,200
系列： PIC® 18F
核心處理器： PIC
芯體尺寸： 8-位
速度： 48MHz
連通性： I²C，SPI，UART/USART，USB
外圍設(shè)備： 欠壓檢測(cè)/復(fù)位，LVD，POR，PWM，WDT
輸入/輸出數(shù)： 49
程序存儲(chǔ)器容量： 32KB（16K x 16）
程序存儲(chǔ)器類型： 閃存
RAM 容量： 3.8K x 8
電壓 - 電源 (Vcc/Vdd)： 2 V ~ 3.6 V
數(shù)據(jù)轉(zhuǎn)換器： A/D 8x10b
振蕩器型： 內(nèi)部
工作溫度： -40°C ~ 85°C
封裝/外殼： 64-TQFP
包裝： 帶卷 (TR)
配用： AC162087-ND - HEADER MPLAB ICD2 18F87J50 68/84
MA180021-ND - MODULE PLUG-IN 18F87J50 FS USB
AC164327-ND - MODULE SKT FOR 64TQFP
其它名稱： PIC18F65J50T-I/PTTR
Philips Semiconductors
Product data
P87LPC767
Low power, low price, low pin count (20 pin)
microcontroller with 4-kbyte OTP and 8-bit A/D converter
2002 Mar 25
31
Timer/Counters
The P87LPC767 has two general purpose counter/timers which are
upward compatible with the standard 80C51 Timer 0 and Timer 1.
Both can be configured to operate either as timers or event counters
(see Figure 24). An option to automatically toggle the T0 and/or T1
pins upon timer overflow has been added.
In the “Timer” function, the register is incremented every machine
cycle. Thus, one can think of it as counting machine cycles. Since a
machine cycle consists of 6 CPU clock periods, the count rate is 1/6
of the CPU clock frequency. Refer to the section Enhanced CPU for
a description of the CPU clock.
In the “Counter” function, the register is incremented in response to
a 1-to-0 transition at its corresponding external input pin, T0 or T1.
In this function, the external input is sampled once during every
machine cycle. When the samples of the pin state show a high in
one cycle and a low in the next cycle, the count is incremented. The
new count value appears in the register during the cycle following
the one in which the transition was detected. Since it takes 2
machine cycles (12 CPU clocks) to recognize a 1-to-0 transition, the
maximum count rate is 1/6 of the CPU clock frequency. There are no
restrictions on the duty cycle of the external input signal, but to
ensure that a given level is sampled at least once before it changes,
it should be held for at least one full machine cycle.
The “Timer” or “Counter” function is selected by control bits C/T in
the Special Function Register TMOD. In addition to the “Timer” or
“Counter” selection, Timer 0 and Timer 1 have four operating
modes, which are selected by bit-pairs (M1, M0) in TMOD. Modes 0,
1, and 2 are the same for both Timers/Counters. Mode 3 is different.
The four operating modes are described in the following text.
BIT
SYMBOL
FUNCTION
TMOD.7
GATE
Gating control for Timer 1. When set, Timer/Counter is enabled only while the INT1 pin is high and
the TR1 control pin is set. When cleared, Timer 1 is enabled when the TR1 control bit is set.
TMOD.6
C/T
Timer or Counter Selector for Timer 1. Cleared for Timer operation (input from internal system clock.)
Set for Counter operation (input from T1 input pin).
TMOD.5, 4
M1, M0
Mode Select for Timer 1 (see table below).
TMOD.3
GATE
Gating control for Timer 0. When set, Timer/Counter is enabled only while the INT0 pin is high and
the TR0 control pin is set. When cleared, Timer 0 is enabled when the TR0 control bit is set.
TMOD.2
C/T
Timer or Counter Selector for Timer 0. Cleared for Timer operation (input from internal system clock.)
Set for Counter operation (input from T0 input pin).
TMOD.1, 0
M1, M0
Mode Select for Timer 0 (see table below).
M1, M0
Timer Mode
0 0
8048 Timer “TLn” serves as 5-bit prescaler.
0 1
16-bit Timer/Counter “THn” and “TLn” are cascaded; there is no prescaler.
1 0
8-bit auto-reload Timer/Counter. THn holds a value which is loaded into TLn when it overflows.
1 1
Timer 0 is a dual 8-bit Timer/Counter in this mode. TL0 is an 8-bit Timer/Counter controlled by the
standard Timer 0 control bits. TH0 is an 8-bit timer only, controlled by the Timer 1 control bits (see
text). Timer 1 in this mode is stopped.
M0
SU01171
M1
C/T
GATE
M0
M1
C/T
GATE
0
1
2
3
4
5
6
7
TMOD
Reset Value: 00h
Not Bit Addressable
Address: 89h
T1
T0
Figure 24. Timer/Counter Mode Control Register (TMOD)
相關(guān)PDF資料
PDF描述
PIC18F83J11T-I/PT IC PIC MCU FLASH 4KX16 80TQFP
PIC16LF627-04/P IC MCU FLASH 1KX14 COMP 18DIP
PIC18F86J55T-I/PT IC PIC MCU FLASH 48KX16 80TQFP
PIC18F43K22-I/MV MCU PIC 8KB FLASH 40QFN
PIC16C55A-04I/P IC MCU OTP 512X12 28DIP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
PIC18F65J90-I/PT 功能描述:8位微控制器 -MCU 32KB FL 2048b RAM 51I/O 8b Fam 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(chǔ)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
PIC18F65J90-I/PT 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 32K FLASH SMD TQFP64
PIC18F65J90T-I/PT 功能描述:8位微控制器 -MCU 32KB Flash 2048bytes-RAM 51I/O 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(chǔ)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
PIC18F65J94-I/MR 制造商:Microchip Technology Inc 功能描述:64 PINS, 32KB FLASH, 4KB RAM, 16MIPS, NANOWATT XLP, LCD, USB - Rail/Tube 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 32KB FLASH 64QFN 制造商:Microchip Technology Inc 功能描述:64 pins, 32KB Flash, 4KB RAM, 16MIPS, nanoWatt XLP, LCD, USB, 64 QFN 9x9x0.9mm T
PIC18F65J94-I/PT 制造商:Microchip Technology Inc 功能描述:64 PINS, 32KB FLASH, 4KB RAM, 16MIPS, NANOWATT XLP, LCD, USB - Trays 制造商:Microchip Technology Inc 功能描述:IC MCU 8BIT 32KB FLASH 64TQFP
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購

我的聯(lián)系方式

*
*
*