MC68HC05L28 데이터 시트보기 (PDF) - Freescale Semiconductor

부품명

상세내역

제조사

MC68HC05L28

Microcontrollers

Freescale Semiconductor 

Freescale Semiconductor, Inc.

2

2

MODES OF OPERATION AND PIN

DESCRIPTIONS

2.1

Modes of operation

The MC68HC05L28 has two modes of operation available to the user – single chip and RAM

bootloader. The MC68HC705L28 also has two modes of operation – single chip and

EPROM/RAM bootloader. Table 2-1 and Table 2-2 show the conditions required to enter each

mode on the rising edge of RESET.

Table 2-1 MC68HC05L28 operating mode entry conditions

IRQ0/VPP PB2 PB3 PB6

Mode

VSS to VDD

x

2 x VDD

1

2 x VDD

1

x

x Single chip

0

VDD RAM bootloader

Jump to RAM ($81)

1

VDD

Load/execute RAM

Table 2-2 MC68HC705L28 operating mode entry conditions

IRQ0/VPP PB2 PB3 PB6

Mode

VSS to VDD

x

2 x VDD

0

2 x VDD

0

2 x VDD

1

2 x VDD

1

x

x Single chip

0

VDD EPROM bootloader Verify only

1

VDD

Program/verify

0

VDD RAM bootloader

Jump to RAM ($81)

1

VDD

Load/execute RAM

MC68HC05L28 MODES OF OPERATION AND PIN DESCRIPTIONS

TPG

MOTOROLA

2-1

For More Information On This Product,

Go to: www.freescale.com

Share Link: