SH7052 Datasheet, PDF (37/919 Pages) Renesas Technology Corp – SuperHTM RISC engine

Table 1.2 Pin Functions (cont)
Type
Operating
mode control
Interrupts
Address bus
Data bus
Bus control
Symbol
MD0 to
MD2
HSTBY
NMI
IRQ0 to
IRQ3
A0 to A21
D0 to D15
CS0 to
CS3
RD
WRH
WRL
WAIT
Pin No.
I/O
18, 22, 23 Input
Name
Mode setting
29
Input Hardware
standby
31
Input Nonmaskable
interrupt
116, 119,
120, 121
Input
Interrupt
requests
0 to 3
1 to 5,
188 to 193,
195,
197 to 204,
206, 208
Output
Address bus
35 to 41, Input/ Data bus
43, 45 to 52 output
11, 13 to 15 Output Chip select
0 to 3
9
Output Read
7
Output Upper write
6
Output Lower write
8
Input Wait
Function
These pins determine the
operating mode. Do not
change the input values
during operation.
When driven low, this pin
forces a transition to hardware
standby mode.
Nonmaskable interrupt
request pin.
Acceptance on the rising edge
or falling edge can be
selected.
Maskable interrupt request
pins.
Level input or edge input can
be selected.
Address output pins.
16-bit bidirectional data bus
pins.
Chip select signals for
external memory or devices.
Indicates reading from an
external device.
Indicates writing of the upper
8 bits of external data.
Indicates writing of the lower 8
bits of external data.
Input for wait cycle insertion in
bus cycles during external
space access.
11