參數(shù)資料
型號: MC68HC711D3MP2
廠商: MOTOROLA INC
元件分類: 微控制器/微處理器
英文描述: 8-BIT, OTPROM, 2 MHz, MICROCONTROLLER, PDIP40
封裝: PLASTIC, DIP-40
文件頁數(shù): 85/157頁
文件大?。?/td> 2252K
代理商: MC68HC711D3MP2
Operating Modes and Memory
Programmable Read-Only Memory (PROM)
MC68HC711D3 — Rev. 2
Data Sheet
MOTOROLA
Operating Modes and Memory
33
2.4.3 PROM Programming Control Register
The PROM programming control register (PPROG) is used to control the
programming of the OTPROM or EPROM. PPROG is cleared on reset so that the
PROM is configured for normal read.
MBE — Multiple Byte Program Enable Bit
This bit is reserved for testing.
Bit 6, 2, and 1 — Not implemented
Always read 0.
ELAT — EPROM (OTPROM) Latch Control Bit
1 = PROM address and data bus are configured for programming. Writes to
PROM cause address and data to be latched. The PROM cannot be
read.
0 = PROM address and data bus are configured for normal reads. PROM
cannot be programmed.
EXCOL — Select Extra Columns Bit
This bit is reserved for testing.
EXROW — Select Extra Row Bit
This bit is reserved for testing.
PGM — EPROM (OTPROM) Program Command Bit
This bit may be written only when ELAT = 1.
1 = Programming power is switched on to PROM array.
0 = Programming power is switched off.
Address: $003B
Bit 7
654321
Bit 0
Read:
MBE
0
ELAT
EXCOL
EXROW
0
PGM
Write:
Reset:
00000000
Figure 2-5. PROM Programming Control Register (PPROG)
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