Zilog Z8PE002 User Manual

Page 42

Z8PE002
Z8Plus OTP Microcontroller

ZiLOG

P R E L I M I N A R Y

DS008700-Z8X0799

PORT B CONTROL REGISTERS (Continued)

Figure 41. Port B Special Function Register

PTBSFR

1 = Enable PB0 as SMR Input
0 = No Special Functionality

1 = Enable PB1 as T0 Output
0 = No Special Functionality

1 = Enable PB2 as IRQ3 Input
0 = No Special Functionality

Reserved (must be 0)

1 = Analog Comparator on PB3 and PB4
0 = Digital Inputs on PB3 and PB4

1 = PB4 Interrupts Enabled
0 = PB4 Interrupts Disabled