Z8E00110PSC View Datasheet(PDF) - Zilog
Part Name
Description
MFG CO.
'Z8E00110PSC' PDF : 46 Pages View PDF
Z8E001
Z8Plus OTP Microcontroller
PORT B
Port B Description
Port B is a 5-bit (bidirectional), CMOS-compatible I/O port.
These five I/O lines can be configured under software con-
trol to be an input or output, independently. Input buffers
are Schmitt-triggered. See Figure 33 through Figure 36 for
diagrams of all five Port B pins.
In addition to standard input/output capability on all five
pins of Port B, each pin provides special functionality as
shown in the following table:
Special functionality is invoked via the Port B Special Func-
tion Register. See Figure 32 for the arrangement and control
conventions of this register.
ZiLOG
Table 8. Port B Special Functions
Port Pin
PB0
PB1
PB2
PB3
PB4
Input Special
Function
Stop Mode Recovery
Input
None
IRQ3
Comparator Reference
Input
Comparator Signal
Input/IRQ1/IRQ4
Output Special
Function
None
Timer0 Output
None
None
None
Register 0D7H
PTBSFR
D7 D6 D5 D4 D3 D2 D1 D0
1 = ENABLE PB0 AS SMR INPUT
0 = NO SPECIAL FUNCTIONALITY
1 = ENABLE PB1 AS TIMER0 OUTPUT
0 = NO SPECIAL FUNCTIONALITY
1 = ENABLE PB2 AS IRQ3 INPUT
0 = NO SPECIAL FUNCTIONALITY
1 = Analog Comparator on PB3 & PB4
0 = Digital Inputs on PB3 & PB4
1 = PB4 Interrupts Enabled
0 = PB4 Interrupts Disabled
RESERVED (MUST BE 0)
Figure 32. Port B Special Function Register
34
PRELIMINARY
DS001101-Z8X0400
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