83C754 Datasheet, PDF (19/26 Pages) NXP Semiconductors – 80C51 8-bit microcontroller family 4K/256 OTP/ROM, DAC, comparator, UART, reference

Philips Semiconductors
80C51 8-bit microcontroller family
4K/256 OTP/ROM, DAC, comparator, UART, reference
Preliminary specification
83C754/87C754
22
20
18
16
14
I_CC mA ¹²
10
8
6
4
2
MAX ACTIVE I_CC6
TYP ACTIVE I_CC6
MAX IDLE I_CC7
TYP IDLE I_CC7
4MHz
8MHz 12MHz 16MHz
FREQ
SU00308
Figure 19. I_CC vs. FREQ
Maximum I_CC values taken at V_CC = 5.5V and worst case temperature.
Typical I_CC values taken at V_CC = 5.0V and 25°C.
Notes 6 and 7 refer to AC Electrical Characteristics.
ROM CODE SUBMISSION
When submitting ROM code for the 83C754, the following must be specified:
1. 4k byte user ROM data
2. 64 byte ROM encryption key
3. ROM security bits.
ADDRESS
0000H to 0FFFH
1000H to 101FH
CONTENT
DATA
KEY
BIT(S)
7:0
7:0
1020H
SEC
0
1020H
SEC
1
COMMENT
User ROM Data
ROM Encryption Key
FFH = no encryption
ROM Security Bit 1
0 = enable security
1 = disable security
ROM Security Bit 2
0 = enable security
1 = disable security
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:
Security Bit #1: V Enabled
V Disabled
Security Bit #2: V Enabled
V Disabled
Encryption:
V No
V Yes If Yes, must send key file.
1998 Apr 23
19