Epson S1C6200A, S1C6200 S1C6200, S1C6200A, S1C6200/6200A, Clock, Clock, Status, Status, Status, CPU clock, Instruction, Instruction, System clock

2 MEMORY AND OPERATIONS

S1C6200

Clock

Status

Instruction 5-clock Instrruction 12-clock Instrruction INT1 (*1) INT2 (*1) JP (*2)

Interrupt

Interrupt processing: 12-clock instruction ... 13 to 25 clock cycles 7-clock instruction ... 13 to 20 clock cycles 5-clock instruction ... 13 to 18 clock cycles

S1C6200A

Clock
Status
Instruction				12-clock Instrruction
	5-clock Instrruction							INT1 (*1)	INT2 (*1)	JP (*2)
					Interrupt
				Interrupt processing:		12-clock instruction		... 12.5 to 24.5 clock cycles
						7-clock instruction		... 12.5 to 19.5 clock cycles
						5-clock instruction		... 12.5 to 17.5 clock cycles
Status:		Fetch	Execute		Note:	(*1)	INT1 and INT2 are dummy instructions
						(*2)	Branches to the top of the interrupt service routine

Fig. 2.5.3.1 Interrupt timing during executionS1C6200/6200ASystem clockCPU clock

Status

Instruction	5-clock Instrruction		HALT				INT1 (*1)	INT2 (*1)	JP (*2)
							Interrupt
						Interrupt processing: 14 to 15 clock cycles
Status:		Fetch	Execute	Note:	(*1)		INT1 and INT2 are dummy instructions
					(*2)		Branches to the top of the interrupt service routine

Fig. 2.5.3.2 Interrupt timing in the HALT mode

S1C6200/6200A CORE CPU MANUAL EPSON 13