Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 52

• Manufacturer Part Number: Z8F011ASH020EG2156
• Description: 8-bit Microcontrollers - MCU 1K FLASH 256B RAM 16B NVDS
• Manufacturer: ZiLOG

Specifications of Z8F011ASH020EG2156

• Rohs: yes
• Core: eZ8
• Data Bus Width: 8 bit
• Maximum Clock Frequency: 20 MHz
• Program Memory Size: 1 KB
• Data Ram Size: 256 B
• On-chip Adc: No
• Package / Case: SOIC-20
• Mounting Style: SMD/SMT
• Interface Type: UART
• Maximum Operating Temperature: + 105 C
• Minimum Operating Temperature: - 40 C
• Number Of Programmable I/os: 17
• Number Of Timers: 2
• Program Memory Type: Flash
• Supply Voltage - Max: 3.6 V
• Supply Voltage - Min: 2.7 V

PS025113-1212
Architecture
GPIO Alternate Functions
System
DATA
Clock
Bus
Data Register
Port Output
Figure 8 displays a simplified block diagram of a GPIO port pin. In this figure, the ability
to accommodate alternate functions and variable port current drive strength is not dis-
played.
Many of the GPIO port pins can be used for general purpose input/output and access to on-
chip peripheral functions such as the timers and serial communication devices. The Port
A–D Alternate Function subregisters configure these pins for either GPIO or Alternate
function operation. When a pin is configured for Alternate function, control of the port pin
direction (input/output) is passed from the Port A–D data direction registers to the Alter-
nate function assigned to this pin.
with each port pin. The alternate function associated at a pin is defined through Alternate
Function subregisters AFS1 and AFS2.
The crystal oscillator functionality is not controlled by the GPIO block. When the crystal
oscillator is enabled in the oscillator control block, the GPIO functionality of PA0 and PA1
is overridden. In that case, pins PA0 and PA1 functions as input and output for the crystal
oscillator.
D
Q
Figure 8. GPIO Port Pin Block Diagram
System
Clock
Port Output Control
Port Data Direction
Data Register
Port Input
Q
Table 16
D
on page 36 lists the alternate functions possible
Q
D
Z8 Encore!
Schmitt Trigger
Product Specification
GND
VDD
®
F0830 Series
Architecture
Port
Pin
34