Z8F011ASH020EG2156 ZiLOG, Z8F011ASH020EG2156 Datasheet - Page 136

• 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
NVDS Operational Requirements
Flash Control Register Definitions
Caution:
•
•
•
•
•
•
The device uses a 12 KB Flash memory space, despite the maximum specified Flash size
of 8 KB (with the exception of 12 KB mode with non-NVDS). User code accesses the
lower 8 KB of Flash, leaving the upper 4 KB for proprietary (for Zilog-only) memory. The
NVDS is implemented by using this proprietary memory space for special-purpose rou-
tines and for the data required by these routines, which are factory-programmed and can-
not be altered by the user. The NVDS operation is described in detail in the
Data Storage
The NVDS routines are triggered by a user code: CALL into proprietary memory. Code
executing from this proprietary memory must be able to read and write other locations
within proprietary memory. User code must not be able to read or write proprietary mem-
ory.
This section defines the features of the following Flash Control registers.
Flash Control
Flash Status
Flash Page Select
Flash Sector Protect
Flash Frequency High and Low Byte
For security reasons, Flash Controller allows only a single page to be opened for write/
erase. When writing multiple Flash pages, the Flash Controller must go through the un-
lock sequence again to select another page.
The Flash Sector Protect Register is ignored for programming and Erase operations.
Programming operations are not limited to the page selected in the page select register.
Bits in the Flash Sector Protect Register can be written to one or zero.
The second write of the page select register to unlock the Flash Controller is not
necessary.
The page select register can be written when the Flash Controller is unlocked.
The mass erase command is enabled through the Flash Control Register
Register: see page 120
chapter on page 134.
Register: see page 119
Register: see page 121
Register: see page 122
Registers: see page 123
NVDS Operational Requirements
Z8 Encore!
Product Specification
®
F0830 Series
Nonvolatile
118