EM78159NAS EMC [ELAN Microelectronics Corp], EM78159NAS Datasheet - Page 15
EM78159NAS
Manufacturer Part Number
EM78159NAS
Description
8-Bit Microcontroller with OTP ROM
Manufacturer
EMC [ELAN Microelectronics Corp]
Datasheet
1.EM78159NAS.pdf
(48 pages)
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Product Specification (V1.0) 03.10.2006
(This specification is subject to change without further notice)
4.2 Special Purpose Registers
4.2.1 A (Accumulator)
4.2.2 CONT (Control Register)
Bit 0 (PSR0) ~ Bit 2 (PSR2): TCC prescaler bits
Bit 3 (PSRE): Prescaler enable bit for TCC.
Bit 4 (TE): TCC signal edge
Bit 5 (TS): TCC signal source
Bit 6 (/INT): Interrupt enable flag
Bit 7:
CONT register is both readable and writable.
Bit 7
Internal data transfer, or instruction operand holding
It cannot be addressed.
-
0 = prescaler disabled bit, TCC rate is 1:1
1 = prescaler enabled bit, TCC rate is set as Bit2~Bit0
0 = increment if the transition from low to high takes place on TCC pin
1 = increment if the transition from high to low takes place on TCC pin
0 = internal instruction cycle clock, P54 is a bi-directional I/O PIN
1 = transition on TCC pin
0 = masked by DISI or hardware interrupt
1 = enabled by ENI/RETI instructions
Not used.
Bit 6
/INT
PSR2
0
0
0
0
1
1
1
1
Bit 5
PSR1
TS
0
0
1
1
0
0
1
1
PSR0
Bit 4
TE
0
1
0
1
0
1
0
1
PSRE
Bit 3
TCC Rate
8-Bit Microcontroller with OTP ROM
1:128
1:256
1:16
1:32
1:64
1:2
1:4
1:8
PSR2
Bit 2
PSR1
Bit 1
EM78P159N
PSR0
Bit 0
• 11
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