Motorola MC68VZ328 用户手册

Index-xviii

signal nomenclature conventions, 14-1
signals

UART 1 clear to send, see CTS1/PE7 pin
UART 1 receive data, see RXD1/PE4 pin
UART 1 request to send, see RTS1/PE6 pin
UART 1 transmit data, see TXD1/PE5 pin
UART 2 clear to send, see CTS2/PJ7 pin
UART 2 receive data, see RXD2/PJ4 pin
UART 2 request to send, see RTS2/PJ6 pin
UART 2 transmitter data, see TXD2/PJ5 pin

UBAUD1 register, 14-12
UBAUD2 register 14-22
UCLK direction bit, see UCLKDIR bit
UCLK pin, connections, 14-4
UCLK signal, 14-4
UCLK/DWE/PE3 pin, 2-8
UCLKDIR bit

UBAUD1 register, 14-12
UBAUD2 register, 14-22

UDS/PK3, LDS/PK2 pin, 2-6
UEN bit

USTCNT1 register, 14-10
USTCNT2 register, 14-20

UGEN bit, 6-6
UMISC1 register, 14-16
UMISC2 register, 14-26
Universal asynchronous receiver/transmitter, see 

UARTs

Unprotected memory block size field, see UPSIZ field
UPSIZ bit 2

CSB register, 6-18
CSC register, 6-18
CSD register, 6-17

UPSIZ field

CSB register, 6-10
CSC register, 6-12
CSD register, 6-14

URX1 register, 14-13
URX2 register, 14-23
USTCNT1 register, 14-10
USTCNT2 register, 14-20
UTX1 register, 14-14
UTX2 register, 14-24
UWE/UB pin, 2-6

VCO frequency, changing, 4-6
VECTOR field, 9-7
Vector number

coding, 9-6
description, 9-3

Vector number field, see VECTOR field
Virtual page width 8–1, see VPx field

WAIT field, 13-11
Wait state field, see WS3–1 field
Wait state trim for LCD-SRAM access bit, see LCWS 

bit

Wake-up clock select field, see WKSEL field
Wake-up interrupts, 10-18
Watchdog timer interrupt request bit, see WDT bit
WDT bit, 9-14, 9-18
WIDTH field

PCTLR register, 4-14
PWMW2 register, 15-10

WKSEL bit, 4-9
WPEXT bit, 6-20
Write pulse to CS negation margin extension bit, see 

WPEXT bit

WS3–1 field

CSA register, 6-8
CSB register, 6-11
CSC register, 6-13
CSD register, 6-15
EMUCS register, 6-16

XCH bit

SPICONT1 register, 13-6
SPICONT2 register, 13-15

XMx field, 8-11
XTAL

oscillator, see CLK32 clock signal
signal pin, 2-4