Features (Continued)
Clocking, Supply and Package Information
■ Strap Input-Controlled Operating Modes:
— Shared BIOS memory mode
— TRI-STATE® mode
— Development mode
■ Clocks
— Single 32.768 KHz crystal oscillator
— On-chip high-frequency clock generators
— Either 32.768 KHz or CR16CPlus clock out
■ Testability
— XOR-tree structure includes all device pins (except
supply, A/D, D/A, and crystal oscillator pins), select-
ed at power-up by strap inputs
— TRI-STATE device pins, selected at power-up by
strap input (TRIS)
■ Power Supply
— 3.3V supply operation
— 5V tolerance and back-drive protection on all pins
(except crystal oscillator, A/D, D/A, LPC bus, and
SPI flash pins)
— Separate supply for host I/F (VDD) and EC functions
(VCC)
— Backup battery input for wake-up configuration
— Reduced power consumption capability
— Software- or hardware-switched power modes:
❏ Active mode
❏ Active mode executing WAIT
❏ Idle
❏ Deep Idle
❏ Suspend
❏ Power Off, for oscillator only, from the backup
battery
— Automatic wake-up on system events
■ Package Options
— 128-pin LQFP package
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Revision 1.0