EM78P510N
8-Bit Microcontrollers
6.15 Code Options
The EM78P510N has one Code Option word that is not part of the normal program
memory. The option bits cannot be accessed during normal program execution.
Code Option Register and Customer ID Register arrangement distribution:
Word 0
Word1
Word 2
Bit 12~Bit 0
Bit 12~Bit 0
Bit 12~Bit 0
1. Code Option Register (Word 0)
Word 0
Bit 7
Bit 12 Bit 11 Bit 10 Bit 9
Bit 8
Bit 6 Bit 5
Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
TYPE1 TYPE0 LVREN LVRS1 LVRS0 ENWDTB FSMD FMMD1 FMMD0 HLP PR2 PR1 PR0
Bits 12~11 (TYPE1~TYPE0): Type Selection for 48 pins or 44 pins or 42 pins or 32 pins.
TYPE1
TYPE0
Type Selection
EM78P510 (32-pin SDIP/SOP)
EM78P510 (42-pin DIP)
0
0
1
1
0
1
0
1
EM78P510 (44-pin LQFP/QFP)
EM78P510 (48-pin LQFP) (default)
Bit 10 (LVREN): Low Voltage Reset Enable Bit
0 : Disable
1 : Enable
Bits 9~8 (LVRS1~LVRS0): Low Voltage Reset Voltage Select Bits
LVRS1 LVRS0
Reset Voltage
2.6V
0
0
1
0
1
0
3.3 V
3.9V
Bit 7 (ENWDTB): Watchdog Timer Enable Bit
0 : Enable
1 : Disable
Bits 6~4 (FSMD, FMMD1~FMMD0): Oscillator Modes Selection Bits
FSMD
FMMD1
FMMD0
Main clock
RC type (ERIC)
Crystal type
PLL type
Sub-clock
RC type (ERIC)
RC type (ERIC)
RC type (ERIC)
RC type (ERIC)
Crystal type
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
PLL type
RC type (ERIC)
Crystal type
PLL type
Crystal type
Crystal type
Crystal
None
90 •
Product Specification (V0.9) 09.12.2006
(This specification is subject to change without further notice)
ELAN [ ELAN MICROELECTRONICS CORP ]
