83C576 Philips Semiconductors, 83C576 Datasheet - Page 28

• Manufacturer Part Number: 83C576
• Description: 80C51 8-bit microcontroller family 8K/256 OTP/ROM/ 6 channel 10-bit A/D/ 4 comparators/ failure detect circuitry/ watchdog timer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
ROM CODE SUBMISSION
When submitting ROM code for the 83C576, the following must be specified:
1. 8k byte user ROM data
2. 32 byte ROM encryption key
3. ROM security bits
4. The watchdog timer parameters. (See Watchdog Timer Specifications for definition of WDL and WDCON bits.)
Security Bit 1: When programmed, this bit has two effects on masked ROM parts:
1. External MOVC is disabled, and
2. EA is latched on Reset.
Security Bit 2: When programmed, this bit inhibits Verify User ROM.
If the ROM code file does not include the options, the following information must be included with the ROM code.
For each of the following, check the appropriate box and send to Philips along with the code:
1998 Jun 04
80C51 8-bit microcontroller family
8K/256 OTP/ROM, 6 channel 10-bit A/D, 4 comparators,
failure detect circuitry, watchdog timer
ADDRESS
0000H to 1FFFH
2000H to 201FH
2020H
2030H
2031H
Security Bit #1:
Security Bit #2:
Encryption:
Watchdog/Timer Modes:
Prescaler Value:
Autoload Value (range 0–255):
Low Voltage Reset (Value 0 or 1):
Oscillator Fail Reset (Value 0 or 1):
Power-Down (Value 0 or 1):
Enabled
Enabled
No
Watchdog Mode
CONTENT
DATA
KEY
SEC
WDCON
WDL
Value
Disabled
Disabled
Yes
If Yes, must send key file.
(Value = 64, 128, 256, 512, 1024, 2048, 4096, 8192)
Timer Mode
BIT(S)
7:0
7:0
0
1
7:5
7:0
4
3
2
1
0
28
COMMENT
User ROM Data
ROM Encryption Key
ROM Security Bit 1
ROM Security Bit 2
PRE2:0
LVRE
OFRE
DPD
WDRUN = 0, not ROM coded
WDMOD
Watchdog autoload value
FFH = no encryption
0 = enable security
1 = disable security
0 = enable security
1 = disable security
(see specification)
83C576/87C576
Product specification