Pin Functions - Hitachi SH7032 Hardware Manual

1.3.2

Pin Functions

Table 1.3 describes the pin functions.
Table 1.3 Pin Functions
Type Symbol
Power V
CC
V
SS
V
PP
Clock EXTAL
XTAL
CK
RES
System
control
WDTOVF 78
BREQ
BACK
Note: * Pin 77 is V
CC
(PROM version).
Pin No. Pin No.
(FP-112) (TFP-120) I/O Name and Function
15, 43, 70, 16, 46, 75,
75, 77 * , 83, 80, 82 * , 88,
84, 99 89, 106
3, 12, 22, 4, 13, 23,
31, 40, 52, 34, 43, 55,
61, 72, 96, 66, 77, 102,
106 113
77 * 82 *
73 78
74 79
71 76
79 84
83
62 67
60 65
in the SH7032 and SH7034 (masked ROM version), and V
I Power: Connected to the power supply.
Connect all V
CC
supply . The chip will not operate if any V
is left unconnected.
I Ground: Connected to ground. Connect all V
pins to the system ground. The chip will not
operate if any V
SS
I PROM programming power supply: Connected
to the power supply (V
operation. Apply +12.5 V when programming
the PROM in the SH7034 (PROM version).
I External clock: Connected to a crystal
resonator or external clock input having the
same frequency as the system clock (CK).
I Crystal: Connected to a crystal resonator with
the same frequency as the system clock (CK).
If an external clock is input at the EXTAL pin,
leave XTAL open.
O System clock: Supplies the system clock (CK)
to peripheral devices.
I Reset: Low input causes a power-on reset if
NMI is high, or a manual reset if NMI is low.
O Watchdog timer overflow: Overflow output
signal from the watchdog timer.
I Bus request: Driven low by an external device
to request bus ownership.
O Bus request acknowledge: Indicates that bus
ownership has been granted to an external
device. By receiving the BACK signal, a device
that has sent a BREQ signal can confirm that it
has been granted the bus.
pins to the system power
pin is left unconnected.
) during normal
CC
in the SH7034
PP
pin
CC
SS
11