参数资料
型号: MCC68HC711D3
厂商: MOTOROLA INC
元件分类: 微控制器/微处理器
英文描述: 8-BIT, OTPROM, 3 MHz, MICROCONTROLLER, UUC
封装: DIE
文件页数: 85/157页
文件大小: 2252K
代理商: MCC68HC711D3
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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