參數(shù)資料
型號(hào): MC68HCL05P1ADW
廠商: FREESCALE SEMICONDUCTOR INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
封裝: SOIC-28
文件頁數(shù): 66/124頁
文件大?。?/td> 3724K
代理商: MC68HCL05P1ADW
NON-DISCLOSURE
AGREEMENT
REQUIRED
Resets
General Release Specification
MC68HC05P1A Rev. 3.0
Resets
5.3 External Reset (RESET)
The reset input is the only external reset and is connected to an internal
Schmitt trigger. The external reset occurs whenever the reset input is
driven below the lower threshold and remains in reset until the RESET
pin rises above the upper threshold. The upper and lower thresholds are
5.4 Internal Resets
The two internally generated resets are the initial power-on reset (POR)
function and the COP watchdog timer function.
5.4.1 Power-On Reset (POR)
The internal POR is generated at power-up to allow the clock oscillator
to stabilize. The POR is strictly for power turn-on conditions and should
not be used to detect a drop in the power supply voltage. There is a 4064
PH2 clock cycle oscillator stabilization delay after the oscillator becomes
active.
5.4.2 Computer Operating Properly (COP) Reset
When the COP watchdog timer is enabled (by mask option), the internal
COP reset is generated automatically by a timeout of the COP watchdog
timer. This timer is implemented with an 18-stage ripple counter that
provides a timeout period of 65.5 ms when a 4-MHz oscillator is used.
The COP watchdog counter is cleared by writing a logic 0 to bit zero at
location $1FF0.
The COP watchdog timer can be disabled by mask option or by applying
2
× V
DD to the IRQ pin. When the IRQ pin is returned to its normal
operating voltage range (between VSS and VDD), the COP watchdog
timer output will be restored if the COP mask option is enabled.
The COP register is shared with the most significant bit (MSB) of an
unimplemented user interrupt vector as shown in Figure 5-2. Reading
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料
PDF描述
MC68HC05P2CFN 8-BIT, MROM, MICROCONTROLLER, PQCC32
MC68HC05P2FN 8-BIT, MROM, MICROCONTROLLER, PQCC32
MC68HC05P3DWR3 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDSO28
MC68HC705P3CS 8-BIT, OTPROM, MICROCONTROLLER, CDIP28
MC68HC05P3DW 8-BIT, MROM, MICROCONTROLLER, PDSO28
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC68HCP11A1CFN3 功能描述:8位微控制器 -MCU 8-bit HCMOS single chip MCU 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
MC68HCP11A1FN 制造商:MOTORALA 功能描述:
MC68HCP11E0CP2 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HCP11E0FN 功能描述:MICROCONTROLLER MCU 8ADC 3MHC RoHS:否 類別:集成電路 (IC) >> 嵌入式 - 微控制器, 系列:HC11 標(biāo)準(zhǔn)包裝:250 系列:56F8xxx 核心處理器:56800E 芯體尺寸:16-位 速度:60MHz 連通性:CAN,SCI,SPI 外圍設(shè)備:POR,PWM,溫度傳感器,WDT 輸入/輸出數(shù):21 程序存儲(chǔ)器容量:40KB(20K x 16) 程序存儲(chǔ)器類型:閃存 EEPROM 大小:- RAM 容量:6K x 16 電壓 - 電源 (Vcc/Vdd):2.25 V ~ 3.6 V 數(shù)據(jù)轉(zhuǎn)換器:A/D 6x12b 振蕩器型:內(nèi)部 工作溫度:-40°C ~ 125°C 封裝/外殼:48-LQFP 包裝:托盤 配用:MC56F8323EVME-ND - BOARD EVALUATION MC56F8323
MC68HCP11E0FNE 功能描述:8位微控制器 -MCU 8B MCU 512RAM COP A/D 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