EM78P153EN EMC [ELAN Microelectronics Corp], EM78P153EN Datasheet - Page 28

• Manufacturer Part Number: EM78P153EN
• Description: EM78P153E is an 8-bit microprocessor with low-power and high-speed CMOS technology
• Manufacturer: EMC [ELAN Microelectronics Corp]

This specification is subject to change without prior notice.
/RESET
Bit12
12
Code Option Register (Word 0)
• Bit 12 (/RESET): Define pin7 as a reset pin.
• Bit 11 (/ENWTD): Watchdog timer enable bit.
• Bit 10 (CLKS): Instruction period option bit.
• Bit 9 and Bit 8 (OSC1 and OSC0 ): Oscillator Modes Selection bits.
• Bit 7 (CS): Code Security Bit
• Bit6 and Bit5 (SUT1 and SUT0 ): Set-Up Time of device bits.
Table 11 Oscillator Modes Defined by OSC1 and OSC0
<Note>: The transient point of system frequency between HXT and LXY is around 400 KHz.
Table 12 Set-up Time of Device Programming
*:The theoretical values are for reference only.
IRC(Internal RC oscillator mode)
ERC(External RC oscillator mode)
HXT(High XTAL oscillator mode)
LXT(Low XTAL oscillator mode)
0: /RESET enable
1: /RESET disable
0: Enable
1: Disable
0: two oscillator periods.
1: four oscillator periods.
Refer to the section of Instruction Set.
0: Security On
1: Security Off
/ENWDT
SUT1
Bit11
Bit12~Bit0
11
1
1
0
0
Word 0
CLKS
Bit10
10
Mode
SUT0
1
0
1
0
OSC1
Bit9
9
Bit1~Bit0
OCS0
Word1
*Set-Up Time
Bit8
8
288 ms
4.5 ms
18 ms
72 ms
Bit7
CS
7
WORD 0
OSC1
28
1
1
0
0
SUT1
Bit6
6
Bit12~Bit0
Word 2
SUT0
OSC0
Bit5
5
1
0
1
0
TYPE
Bit4
4
RCOUT
Bit3
3
EM78P153E
Bit2
C2
2
OTP ROM
Bit1
C1
1
2002/03/01
Bit0
C0
0