upd70208h Renesas Electronics Corporation., upd70208h Datasheet - Page 15

• Manufacturer Part Number: upd70208h
• Description: V40hltm, V50hltm 16/8, 16-bit Microprocessor
• Manufacturer: Renesas Electronics Corporation.

1. PIN FUNCTIONS
1.1 LIST OF PIN FUNCTIONS
AD0 to AD15
AD0 to AD7
A8 to A15
A16/PS0 to A19/PS3
REFRQ
HLDRQ
HLDAK
RESET
RESOUT
READY
NMI
MRD
MWR
IORD
IOWR
ASTB
UBE
High
BUSLOCK
POLL
BUFR/W
BUFEN
X1
X2
CLKOUT
BS0 to BS2
QS0, QS1
TOUT2
TCTL2
TCLK
INTP1 to INTP7
INTAK/SRDY/TOUT1
Notes 1. V50HL only
Note 1, 3
Note 2
Note 3
Note 3
Note 3
Note 3
Note 3
Note 3
Pin Name
Note 2, 3
Note 3
2. V40HL only
3. These pins are provided with a latch. Therefore, when they go into a high-impedance state, they hold
Note 2, 3
Note 3
Note 1, 3
the status before the high-impedance state until driven by an external device. It is not necessary to pull
up or down the data bus. To invert the level of the pin that goes into a high-impedance state by an
external device, a drive current higher than the latch invert current (I
Note 3
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
3-state output
Input/Output
3-state I/O
3-state I/O
Output
Output
Output
Output
Output
Output
Output
Output
Input
Input
Input
Input
Input
Input
Input
Input
Input
—
Data Sheet U13225EJ4V0DS00
Time-division address/data bus
Time-division address/data bus
Address bus
Time-division address/processor status
Refresh request
Bus hold request
Reset
System reset output
Bus cycle end
Non-maskable interrupt
Memory read strobe
Memory read strobe
I/O read strobe
I/O write strobe
Address strobe
Data bus upper byte enable
High level output
Bus lock
Floating-point operation processor polling
Buffer read/write
Buffer enable
Crystal/external clock
Clock output
Bus status
Queue status
Timer 2 control
Timer clock
Maskable interrupts
Bus hold acknowledge
Timer 2 output
Interrupt acknowledge/serial reception ready/timer 1 output
Function
ILH
, I
ILL
PD70208H, 70216H
) is necessary.
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