SH7708 datasheet(578/633 Pages) RENESAS

578 / 633 page

560

Table A.2

Pin Specifications (cont)

Pin No.

I/O

Function

NMI

Nonmaskable interrupt request

IRL3 to IRL0

90 to 93

External interrupt source input

TCLK

134

I/O

Timer external clock input/RTC clock output

EXTAL

External clock/crystal resonator pin

XTAL

Crystal resonator pin

CAP1

External capacitance pin (for PLL1)

CAP2

External capacitance pin (for PLL1)

CKIO

101

I/O

System clock input/output

CKE

131

Clock enable control (for synchronous DRAM)

XTAL2

136

Crystal resonator pin (for on-chip RTC)

EXTAL2

137

Crystal resonator pin (for on-chip RTC)

Leave unconnected

VCC

7, 18, 20, 31,

42, 50, 55, 60,

69, 81, 83, 102,

116, 122, 128,

139

Power

supply

Power supply (3.3 V)

VCC (RTC)

135

Power

supply

RTC oscillator power supply (3.3 V)

VCC (PLL)

75, 78

Power

supply

PLL power supply (3.3 V)

VSS

6, 17, 19, 30,

41, 49, 54, 59,

68, 82, 100,

115, 121, 127,

133, 144

Power

supply

Power supply (0 V)

VSS (RTC)

138

Power

supply

RTC oscillator power supply (0 V)

VSS (PLL)

73, 76

Power

supply

PLL power supply (0 V)

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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