COP8SA-DM National Semiconductor, COP8SA-DM Datasheet - Page 51

• Manufacturer Part Number: COP8SA-DM
• Description: MODULE DEBUGGING FOR COP8SA
• Manufacturer: National Semiconductor

Specifications of COP8SA-DM

• Module/board Type: Debugger Module
• For Use With/related Products: Cop 8
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: *COP8SA-DM

The ECON register is used to configure the user selectable clock, security, RAM size,
power-on reset, WATCHDOG, and HALT options. The register can be programmed and
read only in EPROM programming mode. Therefore, the register should be programmed
at the same time as the program memory. The contents of the ECON register shipped
from the factory read 00 Hex (windowed device) or 80 Hex (OTP device).
The format of the ECON register is as follows:
2.8.5
There are 8 bytes of user storage space in the EPROM that are not read protected by the
security bit in the ECON register. When the security bit in the ECON register is set, data
in User Storage Space is write-enabled, and read-enabled. This allows the user to read
and write this information while still protecting the main EPROM from tampering.
The 8 bytes of user storage space are outside the normal address range of the device, and
cannot be accessed by software. This allows for the storage of non-secure information.
Typical uses of this are serial numbers, date codes, copyright informations, software
version, or lot numbers.
Bit 7 = x
Bit 6 = 1
Bit 5 = 1
Bits 4,3
Bit 2 = 1
Bit 1 =
Bit 0 = 1
Bit 7
= 0
= 0
= 0, 0 External CKI option selected.
= 0,1 R/C oscillator option selected.
= 1,0 Crystal oscillator with on-chip crystal bias resister disabled. G7 (CKO) is
= 1, 1 Crystal oscillator with on-chip crystal bias resister enabled. G7 (CKO) is
= 0
= 0
X
User Storage Space In EPROM
This is for factory test. The polarity is “Don’t Care.”
Power-on reset enabled.
Power-on reset disabled.
Security enabled. EPROM read and write are not allowed.
Security disabled. EPROM read and write are allowed.
G7 is available as a HALT restart and/or general purpose input. CKI is
clock input.
G7 is available as a HALT restart and/or general purpose input. CKI clock
input. Internal R/C components are supplied for maximum R/C frequency.
the clock generator output to crystal/resonator.
the clock generator output to crystal/resonator.
WATCHDOG feature disabled. G1 is a general purpose I/O.
WATCHDOG feature enabled. G1 pin is WATCHDOG output with weak
pullup.
Reserved
HALT mode disabled.
HALT mode enabled.
Bit 6
POR
SECURITY CKI 2 CKI 1 WATCDOG Reserved HALT
Bit 5
Bit 4
Bit 3
COP8SAx7 MICROCONTROLLER
Bit 2
Bit 1
Bit 0
2-13