upd70f3422gj-gae-qs-ax Renesas Electronics Corporation., upd70f3422gj-gae-qs-ax Datasheet - Page 840
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upd70f3422gj-gae-qs-ax
Manufacturer Part Number
upd70f3422gj-gae-qs-ax
Description
32-bit Single-chip Microcontroller
Manufacturer
Renesas Electronics Corporation.
Datasheet
1.UPD70F3422GJ-GAE-QS-AX.pdf
(930 pages)
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Chapter 23
840
Figure 23-8
LBCTL0.BYF0
LBCTL0.TPF0
LBDATA0
DBD[7:0]
23.3.5 Write-Read-Write sequence on the LCD bus
LBDATA0L
write W1
WR
RD
Figure 23-8 shows an example when a write access to the LCD bus is
immediately followed by a read access and vice versa. The example is given in
mod80 mode (LBCTL0.IMD0 = 0) with byte transfers.
In mode68 mode (LBCTL0.IMD0 = 1) the timing is equivalent, when the the RD
strobe is considered as the low active E signal (LBCTL0.EL0 = 1)
Timing (mod80: LBTCTL0.IMD0 = 0): byte write-read-write,
LBWST0.WST = 4, LBCYC0.CYC = 7, LBTCTL0.TCIS = 0
Preliminary User’s Manual U17566EE1V2UM00
LBDATAL
W1
read
CYC
W1
·
T
LBDATAR0L
read R1
CYC
R1
·
T
R1
LBDATA0L
write W2
LCD Bus Interface (LCD-I/F)
W2
CYC
W2
·
T
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