參數(shù)資料
型號(hào): AT89LP214-20PU
廠商: Atmel
文件頁(yè)數(shù): 21/98頁(yè)
文件大小: 0K
描述: MCU 8051 2K FLASH 20MHZ 14-PDIP
產(chǎn)品培訓(xùn)模塊: MCU Product Line Introduction
標(biāo)準(zhǔn)包裝: 25
系列: 89LP
核心處理器: 8051
芯體尺寸: 8-位
速度: 20MHz
連通性: SPI,UART/USART
外圍設(shè)備: 欠壓檢測(cè)/復(fù)位,POR,PWM,WDT
輸入/輸出數(shù): 12
程序存儲(chǔ)器容量: 2KB(2K x 8)
程序存儲(chǔ)器類(lèi)型: 閃存
RAM 容量: 128 x 8
電壓 - 電源 (Vcc/Vdd): 2.4 V ~ 5.5 V
振蕩器型: 內(nèi)部
工作溫度: -40°C ~ 85°C
封裝/外殼: 14-DIP(0.300",7.62mm)
包裝: 管件
28
3538E–MICRO–11/10
AT89LP213/214
14. Enhanced Timer/Counters
The AT89LP213/214 has two 16-bit Timer/Counter registers: Timer 0 and Timer 1. As a Timer,
the register increase every clock cycle by default. Thus, the register counts clock cycles. Since a
clock cycle consists of one oscillator period, the count rate is equal to the oscillator frequency.
The timer rate can be prescaled by a value between 1 and 16 using the Timer Prescaler (see
Table 9-2 on page 14). Both Timers share the same prescaler.
As a Counter, the register is incremented in response to a l-to-0 transition at its corresponding
input pin, T0 or T1. The external input is sampled every clock cycle. When the samples 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 2 clock cycles are required to recognize a l-to-0 transition, the maximum count rate is 1/2
of the oscillator frequency. There are no restrictions on the duty cycle of the input signal, but it
should be held for at least one full clock cycle to ensure that a given level is sampled at least
once before it changes. In the AT89LP214, the T0 and T1 inputs are not available at the pins.
Table 13-5.
Port Pin Alternate Functions
Port Pin
Configuration Bits
Alternate
Function
Notes
PxM0.y
PxM1.y
P1.0
P1M0.0
P1M1.0
AIN0
input-only
GPI0
P1.1
P1M0.1
P1M1.1
AIN1
input-only
GPI1
P1.2
P1M0.2
P1M1.2
GPI2
P1.3
P1M0.3
P1M1.3
GPI3
RST must be disabled
P1.4
P1M0.4
P1M1.4
SS
Resets to quasi-bidirectional
GPI4
P1.5
P1M0.5
P1M1.5
MOSI
GPI5
P1.6
P1M0.6
P1M1.6
MISO
GPI6
P1.7
P1M0.7
P1M1.7
SCK
GPI7
P3.0
P3M0.0
P3M1.0
RXD
AT89LP214 Only
Set as output on AT89LP213
P3.1
P3M0.1
P3M1.1
TXD
P3.2
P3M0.2
P3M1.2
INT0
Internal RC Oscillator Only
P3.3
P3M0.3
P3M1.3
INT1
Internal RC Oscillator or
External Clock Source Only
CLKOUT
P3.4
P3M0.4
P3M1.4
T0
AT89LP213 Only
Set as output on AT89LP214
P3.5
P3M0.5
P3M1.5
T1
P3.6
not configurable
CMPOUT
Pin is tied to comparator output
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AT89LP214-20SU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V 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
AT89LP214-20XU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V 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
AT89LP216-16XI 功能描述:8位微控制器 -MCU Microcontroller 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
AT89LP216-20PU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V 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
AT89LP216-20SU 功能描述:8位微控制器 -MCU SINGLE CYCLE 2K ISP FLASH 2.4-5.5V 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