UPD70F3102-33 NEC [NEC], UPD70F3102-33 Datasheet - Page 12

• Manufacturer Part Number: UPD70F3102-33
• Description: 32-/16-BIT SINGLE-CHIP MICROCONTROLLER
• Manufacturer: NEC [NEC]

12
LCAS
UCAS
RAS0 to RAS3
RAS4
RAS5
RAS6
RAS7
BCYST
CS0 to CS3
CS4
CS5
CS6
CS7
WAIT
REFRQ
IOWR
IORD
DMARQ0 to
DMARQ3
DMAAK0 to
DMAAK3
TC0 to TC3
HLDAK
HLDRQ
ANI0 to ANI7
NMI
CLKOUT
CKSEL
MODE0 to
MODE2
MODE3
RESET
X1
X2
ADTRG
AV
AV
Pin Name
REF
DD
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
Input
I/O
–
–
Column address strobe signal output for lower data of DRAM
Column address strobe signal output for higher data of DRAM
Row address strobe signal output for DRAM
Strobe signal output indicating start of bus cycle
Chip select signal output
Control signal input that inserts a wait in the bus cycle
Refresh request signal output for DRAM
DMA write strobe signal output
DMA read strobe signal output
DMA request signal input
DMA acknowledge signal output
DMA termination (terminal count) signal output
Bus hold acknowledge output
Bus hold request input
Analog input to A/D converter
Non-maskable interrupt request input
System clock output
Input that specifies the clock generator's operation mode
Operation mode specification
System reset input
Connecting system clock resonator. In the case of an external clock, it is
input to X1.
A/D converter external trigger input
Reference voltage applied to A/D converter
Positive power supply for A/D converter
Preliminary Data Sheet U13844EJ2V0DS00
Function
P90/LWR
P91/UWR
P80/CS0 to P83/CS3
P84/CS4/IOWR
P85/CS5/IORD
P86/CS6
P87/CS7
P94
P80/RAS0 to
P83/RAS3
P84/RAS4/IOWR
P85/RAS5/IORD
P86/RAS6
P87/RAS7
PX6
PX5
P84/RAS4/CS4
P85/RAS5/CS5
P04/INTP100 to
P07/INTP103
P14/INTP110 to
P17/INTP113
P104/INTP120 to
P107/INTP123
P96
P97
P70 to P77
P20
PX7
V
P127/INTP153
Alternate Function
PD70F3102-33
PP
–
–
–
–
–
–
–
(3/4)