参数资料
型号: MC68HSC05K0P
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, MICROCONTROLLER, PDIP16
封装: PLASTIC, DIP-16
文件页数: 105/154页
文件大小: 1544K
代理商: MC68HSC05K0P
Technical Data
MC68HC05K0 MC68HC05K1 — Rev. 2.0
54
Resets
MOTOROLA
Technical Data
5.3 Reset Types
A reset immediately stops the operation of the instruction being
executed, initializes certain control bits, and loads the program counter
with a user-defined reset vector address.
These conditions produce a reset:
Initial power-up (power-on reset)
A logic 0 applied to the RESET pin (external reset)
Timeout of the mask-optional computer operating properly (COP)
watchdog (COP reset)
An opcode fetch from an address not in the read-only memory
(ROM) or random-access memory (RAM) (illegal address reset)
VDD voltage below LVR trip point (mask-optional low-voltage
reset)
Figure 5-1 is a block diagram of the reset sources.
5.3.1 Power-On Reset
A positive transition on the VDD pin generates a power-on reset. The
power-on reset is strictly for power-up conditions and cannot be used to
detect drops in power supply voltage.
A 4064 tcyc (internal clock cycle) delay after the oscillator becomes
active allows the clock generator to stabilize. If the RESET pin is at a
logic 0 at the end of 4064 tcyc, the MCU remains in the reset condition
until the signal on the RESET pin goes to a logic 1.
相关PDF资料
PDF描述
MCK16Z4MPV16B1 16-BIT, MICROCONTROLLER, PQFP144
M35044-001FP 24 X 12 CHARACTERS CRT CHAR DSPL CTLR, PDSO20
MC68HC05C8MP 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP40
MC68HC05C8FNR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC44
MC68HC05D24CFN 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PQCC44
相关代理商/技术参数
参数描述
MC68HSC705C8ACFB 制造商:Rochester Electronics LLC 功能描述:8 BIT MCU, 304 BYTES RAM - Bulk
MC68HSC705C8ACP 制造商:Rochester Electronics LLC 功能描述: 制造商:Freescale Semiconductor 功能描述:
MC68HSC705C8ACS 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HSC705J1ACDW 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC68HSC705J1ACP 制造商:Rochester Electronics LLC 功能描述:8 BIT MCU, 64 BYTES RAM - Bulk