CHAPTER 2 PIN FUNCTIONS
User’s Manual U12688EJ4V0UM00
45
(2) Non-port pins (3/4)
Pin Name
I/O
Function
Alternate Function
WE
Output
Write enable signal output for DRAM
P93
OE
Output
Output enable signal output for DRAM
P95
LCAS
Output
Column address strobe signal output for DRAM lower data
P90/LWR
UCAS
Output
Column address strobe signal output for DRAM higher data
P91/UWR
RAS0 to RAS3
P80/CS0 to P83/CS3
RAS4
P84/CS4/IOWR
RAS5
P85/CS5/IORD
RAS6
P86/CS6
RAS7
Output
Row address strobe signal output for DRAM
P87/CS7
BCYST
Output
Strobe signal output that shows the start of the bus cycle
P94
CS0 to CS3
P80/RAS0 to
P83/RAS3
CS4
P84/RAS4/IOWR
CS5
P85/RAS5/IORD
CS6
P86/RAS6
CS7
Output
Chip select signal output
P87/RAS7
WAIT
Input
Control signal input that inserts a wait in the bus cycle
PX6
REFRQ
Output
Refresh request signal output for DRAM
PX5
IOWR
Output
DMA write strobe signal output
P84/RAS4/CS4
IORD
Output
DMA read strobe signal output
P85/RAS5/CS5
DMARQ0 to
DMARQ3
Input
DMA request signal input
P04/INTP100 to
P07/INTP103
DMAAK0 to
DMAAK3
Output
DMA acknowledge signal output
P14/INTP110 to
P17/INTP113
TC0 to TC3
Output
DMA termination (terminal count) signal output
P104/INTP120 to
P107/INTP123
HLDAK
Output
Bus hold acknowledge output
P96
HLDRQ
Input
Bus hold request input
P97
ANI0 to ANI7
Input
Analog inputs to the A/D converter
P70 to P77
NMI
Input
Non-maskable interrupt request input
P20
CLKOUT
Output
System clock output
PX7
CKSEL
Input
Input which specifies the clock generator’s operating mode
MODE0 to
MODE2
MODE3
Input
Operation mode specification
V
PP
Note
Note
µ
PD70F3102 and 70F3102A only
Содержание V850E/MS1 UPD703100
Страница 2: ...User s Manual U12688EJ4V0UM00 2 MEMO ...
Страница 6: ...User s Manual U12688EJ4V0UM00 6 MEMO ...
Страница 8: ...User s Manual U12688EJ4V0UM00 8 MEMO ...
Страница 12: ...User s Manual U12688EJ4V0UM00 12 MEMO ...
Страница 26: ...User s Manual U12688EJ4V0UM00 26 MEMO ...
Страница 68: ...User s Manual U12688EJ4V0UM00 68 MEMO ...
Страница 124: ...User s Manual U12688EJ4V0UM00 124 MEMO ...
Страница 198: ...User s Manual U12688EJ4V0UM00 198 MEMO ...
Страница 230: ...User s Manual U12688EJ4V0UM00 230 MEMO ...
Страница 422: ...User s Manual U12688EJ4V0UM00 422 MEMO ...