參數(shù)資料
型號(hào)： MC68HC705C8ACFN
廠商： MOTOROLA INC
元件分類： 微控制器/微處理器
英文描述： HCMOS Microcontroller Unit
中文描述： 8-BIT, OTPROM, 2.1 MHz, MICROCONTROLLER, PQCC44
封裝： PLASTIC, LCC-44
文件頁(yè)數(shù)： 79/108頁(yè)
文件大?。?/td> 718K
代理商： MC68HC705C8ACFN
MC68HC705KJ1 MC68HRC705KJ1 MC68HLC705KJ1 Data Sheet, Rev. 4.1
Freescale Semiconductor
79
Chapter 9
Multifunction Timer Module
9.1 Introduction
The multifunction timer provides a timing reference with programmable real-time interrupt capability.
Figure 9-2
shows the timer organization.
9.2 Features
Features of the multifunction timer include:
Timer overflow
Four selectable interrupt rates
Computer operating properly (COP) watchdog timer
9.3 Operation
A 15-stage ripple counter, preceded by a prescaler that divides the internal clock signal by four, provides
the timing reference for the timer functions. The value of the first eight timer stages can be read at any
time by accessing the timer counter register at address $0009. A timer overflow function at the eighth
stage allows a timer interrupt every 1024 internal clock cycles.
The next four stages lead to the real-time interrupt (RTI) circuit. The RT1 and RT0 bits in the timer status
and control register at address $0008 allow a timer interrupt every 16,384, 32,768, 65,536, or 131,072
clock cycles. The last four stages drive the selectable COP system. For information on the COP, refer to
Chapter 3 Computer Operating Properly Module (COP)
.
Addr.
Register Name
Bit 7
6
5
4
3
2
1
Bit 0
$0008
Timer Status and Control Register
(TSCR)
See page 81.
Read:
TOF
RTIF
TOIE
RTIE
0
0
RT1
RT0
Write:
TOFR
RTIFR
Reset:
0
0
0
0
0
0
1
1
$0009
Timer Counter Register
(TCR)
See page 82.
Read:
TMR7
TMR6
TMR5
TMR4
TMR3
TMR2
TMR1
TMR0
Write:
Reset:
0
0
0
0
0
0
0
0
= Unimplemented
Figure 9-1. I/O Register Summary
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HC705C8ACFNE 功能描述:8位微控制器 -MCU HC05 CORE + 8K RAM + EPR 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
MC68HC705C8ACFNE 制造商:Freescale Semiconductor 功能描述:IC 8BIT MCU 68HC05 2.1MHZ
MC68HC705C8ACP 功能描述:IC MCU 4MHZ 8K OTP 40-DIP RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器， 系列:HC05 其它有關(guān)文件:STM32F101T8 View All Specifications 特色產(chǎn)品:STM32 32-bit Cortex MCUs 標(biāo)準(zhǔn)包裝:490 系列:STM32 F1 核心處理器:ARM? Cortex?-M3 芯體尺寸:32-位 速度:36MHz 連通性:I²C，IrDA，LIN，SPI，UART/USART 外圍設(shè)備:DMA，PDR，POR，PVD，PWM，溫度傳感器，WDT 輸入/輸出數(shù):26 程序存儲(chǔ)器容量:64KB（64K x 8） 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:10K x 8 電壓 - 電源 (Vcc/Vdd):2 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 10x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 85°C 封裝/外殼:36-VFQFN，36-VFQFPN 包裝:托盤(pán) 配用:497-10030-ND - STARTER KIT FOR STM32497-8853-ND - BOARD DEMO STM32 UNIV USB-UUSCIKSDKSTM32-PL-ND - KIT IAR KICKSTART STM32 CORTEXM3497-8512-ND - KIT STARTER FOR STM32F10XE MCU497-8505-ND - KIT STARTER FOR STM32F10XE MCU497-8304-ND - KIT STM32 MOTOR DRIVER BLDC497-6438-ND - BOARD EVALUTION FOR STM32 512K497-6289-ND - KIT PERFORMANCE STICK FOR STM32MCBSTM32UME-ND - BOARD EVAL MCBSTM32 + ULINK-MEMCBSTM32U-ND - BOARD EVAL MCBSTM32 + ULINK2更多... 其它名稱:497-9032STM32F101T8U6-ND
MC68HC705C8ACPB 制造商:Freescale Semiconductor 功能描述:
MC68HC705C8ACPE 制造商:Freescale Semiconductor 功能描述:
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