SH7708 Datasheet, PDF (578/633 Pages) Renesas Technology Corp – SuperH™ RISC engine

Table A.2 Pin Specifications (cont)
Pin
Pin No.
I/O Function
NMI
89
I
Nonmaskable interrupt request
IRL3 to IRL0 90 to 93
I
External interrupt source input
TCLK
134
I/O Timer external clock input/RTC clock output
EXTAL
79
I
External clock/crystal resonator pin
XTAL
80
O
Crystal resonator pin
CAP1
74
O
External capacitance pin (for PLL1)
CAP2
77
O
External capacitance pin (for PLL1)
CKIO
101
I/O System clock input/output
CKE
131
O
Clock enable control (for synchronous DRAM)
XTAL2
136
O
Crystal resonator pin (for on-chip RTC)
EXTAL2
137
I
Crystal resonator pin (for on-chip RTC)
NC
99
O
Leave unconnected
V_CC
7, 18, 20, 31, Power Power supply (3.3 V)
42, 50, 55, 60, supply
69, 81, 83, 102,
116, 122, 128,
139
V_CC (RTC)
135
Power RTC oscillator power supply (3.3 V)
supply
V_CC (PLL)
75, 78
Power PLL power supply (3.3 V)
supply
V_SS
6, 17, 19, 30, Power Power supply (0 V)
41, 49, 54, 59, supply
68, 82, 100,
115, 121, 127,
133, 144
V_SS (RTC)
138
Power RTC oscillator power supply (0 V)
supply
V_SS (PLL)
73, 76
Power PLL power supply (0 V)
supply
Note: Except in hardware standby mode, power must be supplied constantly to all power supply
pins. In hardware standby mode, power should be supplied at least to the RTC power
supply pins.
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