mc68hc711k4 Freescale Semiconductor, Inc, mc68hc711k4 Datasheet - Page 92

• Manufacturer Part Number: mc68hc711k4
• Description: Hcmos Microcontroller Unit
• Manufacturer: Freescale Semiconductor, Inc

Operating Modes and On-Chip Memory
Technical Data
92
ELAT — EPROM Latch Control Bit
EXCOL — Select Extra Columns Bit
EXROW — Select Extra Rows Bit
EPGM — EPROM Programming Enable Bit
Setting ELAT latches the address and data of writes to the EPROM.
The EPROM cannot be read. ELAT can be read at any time. ELAT
can be written any time except when PGM = 1, which disables writes
to ELAT.
EXCOL is for factory use only and is accessible only in special test
mode. When EXCOL equals 1, extra columns can be accessed at
bit 7 and bit 0. Addresses use bits [11:5]. Bits [4:1] are ignored.
EXROW is for factory use only and is only accessible in special test
mode. When EXROW equals 1, two extra rows are available.
Addresses use bits [5:0]. Bits [11:6] are ignored.
EPGM applies programming voltage (V
be read at any time. EPGM can be written only when ELAT = 1.
Freescale Semiconductor, Inc.
For More Information On This Product,
0 = EPROM address and data bus configured for normal reads.
1 = EPROM address and data bus are configured for
0 = User array selected
1 = Extra columns selected and user array disabled
0 = User array selected
1 = Extra rows selected and user array is disabled
0 = Programming voltage to EPROM array is disconnected
1 = Programming voltage to EPROM array is connected; ELAT
Operating Modes and On-Chip Memory
EPROM cannot be programmed.
programming. Address and data of writes to EPROM are
latched. EPROM cannot be read.
cannot be changed.
Go to: www.freescale.com
PP
) to the EPROM. EPGM can
M68HC11K Family
MOTOROLA