参数资料
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: 113/132页
文件大小: 2612K
代理商: MC68HC05K3CP
Personality EEPROM (PEEPROM)
PEEPROM Registers
MC68HC05K3 — Rev. 5
Technical Data
Personality EEPROM (PEEPROM)
9.3 PEEPROM Registers
Two register locations are used to support the EEPROM array. These
are the bit select and status/control registers.
9.3.1 PEEPROM Bit Select Register
The PEEPROM bit select register (PEBSR) is located at $000E and
contains the enable signals for the rows and columns to access the bits
in the EEPROM array. Figure 9-2 shows the placement of these bits.
The output of this register is connected to two decoders, one for the
array column and one for the array row.
A byte in the PEEPROM is defined by the upper four bits in the 7-bit
address in the PEBSR (PEB3–PEB6) and the bit within that byte is
defined by the lower three bits in the 7-bit address in the PEBSR
(PEB0–PEB2). The upper bit in the PEBSR (PEB7) may be used as a
storage location. All of the bits in the PEBSR register are cleared by
reset.
Address:
$000E
Byte (Row) of PEEPROM
Bit (Column in Byte (Row)
of PEEPROM
3210
2
1
0
Bit 7
6543
2
1
Bit 0
Read:
PEB7
PEB6
PEB5
PEB4
PEB3
PEB2
PEB1
PEB0
Write:
Reset:
00000
0
Figure 9-2. PEEPROM Bit Select Register (PEBSR)
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Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
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ARCHIVED
BY
FREESCALE
SEMICONDUCT
OR,
INC.
2006
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