参数资料
型号: MC68HC05V7CFNR2
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC68
封装: PLASTIC, LCC-68
文件页数: 100/170页
文件大小: 589K
代理商: MC68HC05V7CFNR2
SECTION 3: EPROM and EEPROM
MOTOROLA
Page 21
MC68HC05V7 Specification Rev. 1.0
SECTION 3
EEPROM
The MC68HC05V7 contains EEPROM memory. This section describes the programming
mechanisms.
3.1
EEPROM PROGRAMMING REGISTER $1C
The contents and use of the programming register are discussed below.
Figure 3-1:
Programming Register
NOTE:
Any reset including LVR will abort any write in progress when it is
asserted. Data written to the addressed byte will therefore be
indeterminate.
3.1.1
CPEN - Charge Pump Enable
When set, CPEN enables the charge pump which produces the internal programming
voltage. This bit should be set with the LATCH bit. The programming voltage will not be
available until EEPGM is set. The charge pump should be disabled when not in use. CPEN
is readable and writable and is cleared by reset.
3.1.2
ER1:ER0 - Erase Select Bits
ER1 and ER0 form a 2-bit field which is used to select one of three erase modes: byte,
block, or bulk. Table 3-1 shows the modes selected for each bit configuration. These bits
are readable and writable and are cleared by reset.
In byte erase mode, only the selected byte is erased. In block mode, a 32-byte block of
EEPROM is erased. The EEPROM memory space is divided into four 32-byte blocks
($0240-$025F, $0260-$027F, $0280-$029F, $02A0-$02BF), and doing a block erase to
any address within a block will erase the entire block. In bulk erase mode, the entire 128
byte EEPROM section is erased.
-
ER1
ER0
LATCH
EERC
EEPGM
CPEN
$1C
0
000000
0
RESET:
相关PDF资料
PDF描述
MC68HC05V7FNR2 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC68
MC68HC05V7FN 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQCC68
MC68HC05V7CB 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PDIP56
MC68HC05V7CFU 8-BIT, MROM, 2.1 MHz, MICROCONTROLLER, PQFP64
MC68HC05X16FU 8-BIT, MROM, MICROCONTROLLER, PQFP64
相关代理商/技术参数
参数描述
MC68HC05X16 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor HCMOS) microcontroller unit
MC68HC05X32 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:High-density complementary metal oxide semiconductor HCMOS) microcontroller unit
MC68HC05X4 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05X4CDW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit
MC68HC05X4DW 制造商:FREESCALE 制造商全称:Freescale Semiconductor, Inc 功能描述:HCMOS Microcontroller Unit