Seiko Cal. V17 User Manual download pdf (Page 7)

2. Connection Example with Standard CPU

S1R72V17 CPU Connection Guide EPSON 3

(Rev. 1.0)

2) 16-bit bus, BE mode connection example

Set CPU_Config register (0x075h address) BusMode bit to “1” and Bus8x16 bit to “0.”

16bit BE mode

CPU S1R72V17

IOVDD CVDD

Address[8:1] CA[8:1]

XBEL XBEL(CA[0])

DATA[15:0] CD[15:0]

XCS XCS

XRD XRD

XBEH XWRH(XBEH)

XWR XWRL(XWR)

XDREQ

DREQ

XDACK

DACK

XINT

INT

1: Open

2: Fixed at High or Low

1.65 V to 3.6 V

Fig. 2-2 16-bit bus, BE mode connection example

3) 8-bit bus mode connection example

Set CPU_Config register (0x075h address) BusMode bit to “0” and Bus8x16 bit to “1.”

8bit mode

CPU S1R72V17

IOVDD CVDD

Address[8:1] CA[8:1]

Address[0] XBEL(CA[0])

CD[15:8]

DATA[7:0] CD[7:0]

XCS XCS

XRD XRD

XWRH(XBEH)

XWR XWRL(XWR)

XDREQ

DREQ

XDACK

DACK

XINT

INT

1: Open

2: Fixed at High or Low

1.65 V to 3.6 V

Fig. 2-3 8-bit bus mode connection example

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Seiko Cal. V17 User Manual Page 7

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