em78p134n ELAN Microelectronics Corp, em78p134n Datasheet - Page 54

• Manufacturer Part Number: em78p134n
• Description: 8-bit Microcontroller With Otp Rom
• Manufacturer: ELAN Microelectronics Corp

EM78P134N
8-Bit Microcontroller with OTP ROM
48 •
Mnemonic
Bit
1
0
Bit 12 Bit 11 Bit 10
1
-
-
5.12.3 Customer ID Register (Word 2)
5.13 Instruction Set
Each instruction in the instruction set is a 13-bit word divided into an OP code and one
or more operands. Normally, all instructions are executed within one single instruction
cycle (one instruction consists of 2 oscillator periods), unless the program counter is
changed by instruction "MOV R2,A", "ADD R2,A", or by instructions of arithmetic or
logic operation on R2 (e.g. "SUB R2,A", "BS(C) R2,6", "CLR R2", etc.). In this case, the
execution takes two instruction cycles.
Bit 12 (Unused): unused bit, set to 1 all the time
Bit 11 (Unused): unused bit, set to 1 all the time
Bit 10 (CMP_DE): comparator de-glitch enable bit
Bit 9 (Unused): unused bit, set to 1 all the time
Bit 8 (RESETEN): P63//RST pin select bit
Bit 7 (EFT_SEL): EFT hold time selection
Bit 6 (SUT0): set up time select bit
Bit 5~Bit 0: unused bit, set to 1 all the time
1
-
-
CMP_DE
High
Low
0: disable
1: enable
0: P63//RST set to /RST pin
1: P63//RST set to P63 pin
0: short hold time 8 µs × 16
1: long hold time 8 µs × 64
0: 4.5 ms
1: 18 ms
Bit 9
1
-
-
RESETEN
/RST
Bit 8
P63
Word 2
EFT_SEL
Short
Long
Bit 7
(This specification is subject to change without further notice)
4.5ms
18ms
SUT0
Bit 6
Product Specification (V1.6) 06.02.2010
Bit 5 Bit 4 Bit 3 Bit 2 Bit 1
1
-
-
1
-
-
1
-
-
1
-
-
1
-
-
Bit 0
1
-
-