SH7729R Datasheet, PDF (499/855 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer Super RISC engine Family/SH7700 Series

14.1.3 Pin Configuration
Table 14.1 shows the RTC pin configuration.
Table 14.1 RTC Pins
Pin
Abbreviation I/O Description
RTC oscillator crystal pin
RTC oscillator crystal pin
EXTAL2
XTAL2
I
Connects crystal to RTC oscillator^*2
O
Connects crystal to RTC oscillator^*2
Clock input/clock output
TCLK
Dedicated power-supply pin
for RTC
Dedicated GND pin for RTC
Vcc–RTC
Vss–RTC
I/O External clock input pin/input capture
control input pin/realtime clock (RTC)
output pin (shared by TMU)
—
Dedicated power-supply pin for RTC^*1
—
Dedicated GND pin for RTC^*1
Notes: 1. Except in hardware standby mode, power must be supplied to all power supply pins,
including these, even when only the RTC is used (including standby mode).
2. When the RTC is not used, pull EXTAL2 up (to Vcc) and make no connection for
XTAL2.
Rev. 5.0, 09/03, page 453 of 806