Hitachi SH7032 - Pin Functions

11
1.3.2 Pin Functions
Table 1.3 describes the pin functions.
Table 1.3 Pin Functions
Type Symbol
Pin No.
(FP-112)
Pin No.
(TFP-120) I/O Name and Function
Power V
CC
15, 43, 70,
75, 77
*
, 83,
84, 99
16, 46, 75,
80, 82
*
, 88,
89, 106
I Power: Connected to the power supply.
Connect all V
CC
pins to the system power
supply . The chip will not operate if any V
CC
pin
is left unconnected.
V
SS
3, 12, 22,
31, 40, 52,
61, 72, 96,
106
4, 13, 23,
34, 43, 55,
66, 77, 102,
113
I Ground: Connected to ground. Connect all V
SS
pins to the system ground. The chip will not
operate if any V
SS
pin is left unconnected.
V
PP
77
*
82
*
I PROM programming power supply: Connected
to the power supply (V
CC
) during normal
operation. Apply +12.5 V when programming
the PROM in the SH7034 (PROM version).
Clock EXTAL 73 78 I External clock: Connected to a crystal
resonator or external clock input having the
same frequency as the system clock (CK).
XTAL 74 79 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.
CK 71 76 O System clock: Supplies the system clock (CK)
to peripheral devices.
System
control
RES 79 84 I Reset: Low input causes a power-on reset if
NMI is high, or a manual reset if NMI is low.
WDTOVF78 83 O Watchdog timer overflow: Overflow output
signal from the watchdog timer.
BREQ 62 67 I Bus request: Driven low by an external device
to request bus ownership.
BACK 60 65 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.
Note: *Pin 77 is V
CC
in the SH7032 and SH7034 (masked ROM version), and V
PP
in the SH7034
(PROM version).