HD6417727BP160CV Datasheet, PDF (517/1098 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family/ SH7700 Series

Section 16 Realtime Clock (RTC)
16.1.3 Pin Configuration
Table 16.1 shows the RTC pin configuration.
Table 16.1 RTC Pin Configuration
Pin
Abbreviation I/O Description
RTC oscillator crystal pin
RTC oscillator crystal pin
Power-supply pin dedicated
for RTC
GND pin dedicated for RTC
EXTAL2
XTAL2
Vcc-RTC
Vss-RTC
I
Connects crystal to RTC oscillator^*1
O
Connects crystal to RTC oscillator^*1
—
Power-supply pin for RTC oscillator^*1
—
GND pin for RTC oscillator^*2
Notes: 1. When the RTC is not used, set EXTAL2 to pull-up (to Vcc-RTC) and make no
connection for XTAL2.
2. Input of external noise via the Vss-RTC pin can cause the device to malfunction. To
prevent external noise input via the Vss-RTC, the system and circuitry should include a
noise elimination circuit.
Rev.6.00 Mar. 27, 2009 Page 459 of 1036
REJ09B0254-0600