EM78869 データシートの表示（PDF） - ELAN Microelectronics

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EM78869

8-Bit RISC Type Microprocessor

ELAN Microelectronics 

EM78869

8-Bit RISC Type Microprocessor

6.1.16 RF (Interrupt Status Register)

Bit 7

INT3

Bit 6

0

Bit 5

CNT2

Bit 4

CNT1

Bit 3

INT2

Bit 2

INT1

Bit 1

INT0

Bit 0

TCIF

Bit 0: (TCIF) TCC timer overflow interrupt flag. Set when TCC timer overflows.

Bit 1: (INT0) External INT0 pin interrupt flag

Bit 2: (INT1) External INT1 pin interrupt flag

Bit 3: (INT2) External INT2 pin interrupt flag

Bit 4: (CNT1) Internal Counter 1 underflow interrupts

Bit 5: (CNT2) Internal Counter 2 underflow interrupts

Bit 6: Unused. Clear to ‘0.’

Bit 7: (INT3) External INT3 pin interrupt flag

NOTE

1. “1” means interrupt request; “0” means non-interrupt

2. Refer to Section 6.7 (Interrupt) for reference on high to low edge trigger

3. IOCF is the interrupt mask register. You can read and clear this register.

6.1.17 R10 ~ R1F and R20 ~ R3F (General Purpose Register)

R10 ~ R1F & R20 ~ R3F (Banks 0~3) are general purpose registers.

6.2 Special Purpose Registers

6.2.1 A (Accumulator, ACC)

Internal data transfer, or instruction operand holding. This is not an addressable register.

6.2.2 CONT (Control Register)

Bit 7

Bit 6

INT_EDGE INT

Bit 5

TS

Bit 4

-

Bit 3

PAB

Bit 0 ~2: (PSR0) (PSR2) TCC/WDT pre-scaler bits

PSR2

0

0

0

0

1

1

1

1

PSR1

0

0

1

1

0

0

1

1

PSR0

0

1

0

1

0

1

0

1

Bit 2

PSR2

Bit 1

PSR1

Bit 0

PSR0

TCC Rate

1:2

1:4

1:8

1:16

1:32

1:64

1:128

1:256

WDT Rate

1:1

1:2

1:4

1:8

1:16

1:32

1:64

1:128

This specification is subject to change without further notice.

07.12.2004 (V1.0) 11 of 34

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