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| 型号： | MC68HC05K3CP |
| 厂商： | FREESCALE SEMICONDUCTOR INC |
| 元件分类： | 微控制器/微处理器 |
| 英文描述： | 8-BIT, MROM, 2 MHz, MICROCONTROLLER, PDIP16 |
| 封装： | PLASTIC, DIP-16 |
| 文件页数： | 117/132页 |
| 文件大小： | 2612K |
| 代理商： | MC68HC05K3CP |
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Personality EEPROM (PEEPROM)
PEEPROM Programming
MC68HC05K3 — Rev. 5
Technical Data
Personality EEPROM (PEEPROM)
PEBULK — PEEPROM Bulk Erase Bit
The PEBULK bit is a read/write bit to control the switches that apply
an internally provided programming voltage to all the bits in the
PEEPROM array that are to be erased. When the PEBULK bit is set
to a logical 1, a logical 0 is stored to all bits of the PEEPROM array
regardless of the bit address specified in the PEBSR.
The PEBULK bit should only be set if the PEBYTE and PEPGM bits
are cleared. If both the PEBYTE and PEBULK bits are set, the
personality EEPROM is bulk erased. The PEBULK bit is cleared when
the device is reset.
PEDATA — PEEPROM Data Bit
The PEDATA bit is a read-only bit that reflects the state of the
PEEPROM sense amplifier. The state of the PEDATA bit is only
meaningful when the PEBYTE, PEPGM, PEBULK, and CPEN control
bits are all 0. The state of the PEDATA bit following a reset is
dependent on the stored data in bit 0 of the PEEPROM array.
9.4 PEEPROM Programming
The PEEPROM can be programmed using a Motorola programmer or in
the user application if the VDD supply source is at least 2.7 Vdc. In the
latter case, the programming software must be provided in the user
ROM and use some external pins in either a serial or parallel method for
data transfer and/or access. Each bit of the PEEPROM can be
programmed using this step-by-step procedure:
1. Write the desired bit location to be programmed into the PEBSR
located at $000E.
2. Set the PEPGM and CPEN bits in the PESCR located at $000F.
3. Wait for a tEPGM time delay.
4. Clear the PEPGM and CPEN bits.
The PEEPROM is then ready to be set up for another bit of data for
programming.
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Freescale Semiconductor, Inc.
For More Information On This Product,
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ARCHIVED
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SEMICONDUCT
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2006
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