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UPD161622 データシートの表示(PDF) - NEC => Renesas Technology

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UPD161622
NEC
NEC => Renesas Technology NEC
UPD161622 Datasheet PDF : 103 Pages
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µ PD161622
Moreover, when using the parallel interface, it is possible to use the BMD flag (D7 of the data access control register
(R5) to select the length of the data to be transmitted as either 16 bits (BMD = 0) or 8 bits (BMD = 1). This setting is
valid for the display data written as DR data to the display memory register (R12).
The relationship between the command input and the data bus length is as follows.
Commands other than those of the display memory register (R12) are executed in 1-byte units regardless of
the value of BMD (bus length setting flag in data access control register (R5)).
Display memory register (R12) commands are executed in 1-byte units when BMD = 1, and in 1-word units
when BMD = 0.
(1) Commands other than those of the display memory register (R12)
BMD = 1 (8-bit data bus)
Pin
D7
D6
D5
D4
D3
D2
D1
D0
Data
D7
D6
D5
D4
D3
D2
D1
D0
BMD = 0 (16-bit data bus)
Pin
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Data
Note Note Note Note Note Note Note Note D7
D6
D5
D4
D3
D2
D1
D0
Note 0 or 1
(2) Display memory register (R12)
BMD = 1 (8-bit data bus)
Pin
Data
D7
D6
D5
D4
D3
D2
D1
D0
D7
D6
D5
D4
D3
D2
D1
D0
BMD = 0 (16-bit data bus)
Pin
Data
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
D15 D14 D13 D12 D11 D10 D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
Data Sheet S15649EJ2V0DS
15

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