参数资料
型号: MC68HC705P6ACDW
厂商: Freescale Semiconductor
文件页数: 62/98页
文件大小: 0K
描述: IC MCU 2.1MHZ 4.5K OTP 28-SOIC
标准包装: 26
系列: HC05
核心处理器: HC05
芯体尺寸: 8-位
速度: 2.1MHz
连通性: SIO
外围设备: POR,WDT
输入/输出数: 21
程序存储器容量: 4.5KB(4.5K x 8)
程序存储器类型: OTP
RAM 容量: 176 x 8
电压 - 电源 (Vcc/Vdd): 3 V ~ 5.5 V
数据转换器: A/D 4x8b
振荡器型: 内部
工作温度: -40°C ~ 85°C
封装/外壳: 28-SOIC(0.295",7.50mm 宽)
包装: 管件
MOR Programming
MC68HC705P6A Advance Information Data Sheet, Rev. 2.1
Freescale Semiconductor
65
11.3 MOR Programming
The contents of the MOR should be programmed in bootloader mode using the hardware shown in
Figure 10-2. MC68HC705P6A EPROM Programming Flowchart. In order to allow programming, all the
implemented bits in the MOR are essentially read-write bits in bootloader mode as shown in Figure 11-1.
The programming of the MOR is the same as user EPROM.
1.
Set the ELAT bit in the EPROG register.
2.
Write the desired data to the desired MOR address.
3.
Set the EPGM bit in the EPROG.
4.
Wait for the programming time (tEPGM).
5.
Clear the ELAT and EPGM bits in the EPROG.
6.
Remove the programming voltage from the IRQ/VPP pin.
A sample routine to program a byte of EPROM is shown in Table 11-2.
Once the MOR bits have been programmed, the options are not loaded into the MOR registers until the
part is reset.
Table 11-2. MOR Programming Routine
001C
00FF
0023
1EFF
1F00
0000
EPROG
DATA2
DATA1
MOR2
MOR1
EPGM
EQU
$1C
EQU
$FF
EQU
#23
EQU
$1EFF
EQU
$1F00
EQU
$00
PROGRAMMING REG
SAMPLE MOR VALUES
MOPR ADDRESSES
EPGM BIT IN EPROG REG
00E0
ORG
$E0
00E0
00E2
00E4
00E6
00E9
00EB
00ED
00EF
A6 04
B7 1C
A6 FF
C7 1E FF
12 1C
AD 03
3F 1C
81
LDA
#$04
STA
EPROG
LDA
#DATA2
STA
MOR2
BSET EPGM,EPROG
BSR
DELAY
CLR
EPROG
RTS
SET ELAT BIT
IN EPGM REG AT $1C
DATA BYTE
WRITE IT TO MOR LOC
TURN ON PGM VOLTAGE
WAIT 4 ms MINIMUM
CLR EPGM REGISTER
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