cop8cfe9 National Semiconductor Corporation, cop8cfe9 Datasheet - Page 25

• Manufacturer Part Number: cop8cfe9
• Description: 8-bit Cmos Flash Microcontroller With 8k Memory, Virtual Eeprom, And 10-bit A/d
• Manufacturer: National Semiconductor Corporation

cpgerase
cmserase
creadbf
cblockr
cwritebf
cblockw
exit
Command/
5.0 In-System Programming
Label
Page Erase
Mass Erase
Read Byte
Block Read
Write Byte
Block Write
EXIT
Function
Entry Point
Command
0x1A
0x17
0x26
0x14
0x23
0x62
0x11
TABLE 12. User ISP/Virtual E
Register ISPADHI is loaded by the user
with the high byte of the address.
Register ISPADLO is loaded by the
user with the low byte of the address.
Accumulator A contains the
confirmation key 0x55.
Register ISPADHI is loaded by the user
with the high byte of the address.
Register ISPADLO is loaded by the
user with the low byte of the address.
Register ISPADHI is loaded by the user
with the high byte of the address.
Register ISPADLO is loaded by the
user with the low byte of the address.
X pointer contains the beginning RAM
address where the result(s) will be
returned.
Register BYTECOUNTLO contains the
number of n bytes to read
(0
setup the segment register.
Register ISPADHI is loaded by the user
with the high byte of the address.
Register ISPADLO is loaded by the
user with the low byte of the address.
Register ISPWR contains the Data
Byte to be written.
Register ISPADHI is loaded by the user
with the high byte of the address.
Register ISPADLO is loaded by the
user with the low byte of the address.
Register BYTECOUNTLO contains the
number of n bytes to write (0
The combination of the
BYTECOUNTLO and the ISPADLO
registers must be set such that the
operation will not cross a 32 byte
boundary.
X pointer contains the beginning RAM
address of the data to be written.
It is up to the user to setup the
segment register.
N/A
(Continued)
n
255). It is up to the user to
Parameters
25
2
Entry Points
n
16).
N/A (A page of memory beginning at
ISPADHI, ISPADLO will be erased)
N/A (The entire Flash Memory will be
erased)
Data Byte in Register ISPRD.
n Data Bytes, Data will be returned
beginning at a location pointed to by
the RAM address in X.
N/A
N/A
N/A (Device will Reset)
Return Data
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