Z8F6421PM020SC Datasheet, PDF (74/299 Pages) Zilog, Inc. – High Performance 8-Bit Microcontrollers Z8 Encore-R 64K Series

Z8 Encore!^® 64K Series
Product Specification
54
Table 12. Port Alternate Function Mapping (Continued)
Port
Port D
Port E
Port F
Port G
Port H
Pin Mnemonic
Alternate Function Description
PD0 T3IN
Timer 3 In (unavailable in 44-pin packages)
PD1 T3OUT
Timer 3 Out (unavailable in 44-pin packages)
PD2 N/A
No alternate function
PD3 DE1
UART 1 Driver Enable
PD4 RXD1 / IRRX1 UART 1 / IrDA 1 Receive Data
PD5 TXD1 / IRTX1 UART 1 / IrDA 1 Transmit Data
PD6 CTS1
UART 1 Clear to Send
PD7 RCOUT
Watch-Dog Timer RC Oscillator Output
PE[7:0] N/A
No alternate functions
PF[7:0] N/A
No alternate functions
PG[7:0] N/A
No alternate functions
PH0 ANA8
ADC Analog Input 8
PH1 ANA9
ADC Analog Input 9
PH2 ANA10
ADC Analog Input 10
PH3 ANA11
ADC Analog Input 11
GPIO Interrupts
Many of the GPIO port pins can be used as interrupt sources. Some port pins may be con-
figured to generate an interrupt request on either the rising edge or falling edge of the pin
input signal. Other port pin interrupts generate an interrupt when any edge occurs (both
rising and falling). Refer to the Interrupt Controller chapter for more information on
interrupts using the GPIO pins.
GPIO Control Register Definitions
Four registers for each Port provide access to GPIO control, input data, and output data.
Table 13 lists these Port registers. Use the Port A–H Address and Control registers
together to provide access to sub-registers for Port configuration and control.
PS019915-1005
General-Purpose I/O