Z8F0123SB005EG Zilog, Z8F0123SB005EG Datasheet - Page 145

• Manufacturer Part Number: Z8F0123SB005EG
• Description: IC ENCORE MCU FLASH 1K 8SOIC
• Manufacturer: Zilog
• Series: Encore!® XP®r

Specifications of Z8F0123SB005EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 5MHz
• Connectivity: IrDA, UART/USART
• Peripherals: Brown-out Detect/Reset, LED, POR, PWM, WDT
• Number Of I /o: 6
• Program Memory Size: 1KB (1K x 8)
• Program Memory Type: FLASH
• Ram Size: 256 x 8
• Voltage - Supply (vcc/vdd): 2.7 V ~ 3.6 V
• Data Converters: A/D 4x10b
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Other names: 269-3757

PS024314-0308
Caution:
Byte Programming
Page Erase
Mass Erase
a bit of the Sector Protect Register has been set, it cannot be cleared except by powering
down the device.
The Flash Memory is enabled for byte programming after unlocking the Flash Controller
and successfully enabling either Mass Erase or Page Erase. When the Flash Controller is
unlocked and Mass Erase is successfully completed, all Program Memory locations are
available for byte programming. In contrast, when the Flash Controller is unlocked and
Page Erase is successfully enabled, only the locations of the selected page are available for
byte programming. An erased Flash byte contains all 1’s (
operation can only be used to change bits from 1 to 0. To change a Flash bit (or multiple
bits) from 0 to 1 requires execution of either the Page Erase or Mass Erase commands.
Byte Programming is accomplished using the On-Chip Debugger's Write Memory
command or eZ8 CPU execution of the
LDC
download at www.zilog.com. While the Flash Controller programs the Flash memory, the
eZ8 CPU idles but the system clock and on-chip peripherals continue to operate. To exit
programming mode and lock the Flash, write any value to the Flash Control register,
except the Mass Erase or Page Erase commands.
The Flash memory can be erased one page (512 bytes) at a time. Page Erasing the Flash
memory sets all bytes in that page to the value
identifies the page to be erased. Only a page residing in an unprotected sector can be
erased. With the Flash Controller unlocked and the active page set, writing the value
to the Flash Control register initiates the Page Erase operation. While the Flash Controller
executes the Page Erase operation, the eZ8 CPU idles but the system clock and on-chip
peripherals continue to operate. The eZ8 CPU resumes operation after the Page Erase
operation completes. If the Page Erase operation is performed using the On-Chip Debug-
ger, poll the Flash Status register to determine when the Page Erase operation is complete.
When the Page Erase is complete, the Flash Controller returns to its locked state.
The Flash memory can also be Mass Erased using the Flash Controller, but only by using
the On-Chip Debugger. Mass Erasing the Flash memory sets all bytes to the value
With the Flash Controller unlocked and the Mass Erase successfully enabled, writing the
The byte at each address of the Flash memory cannot be programmed (any bits written
to 0) more than twice before an erase cycle occurs. Doing so may result in corrupted
data at the target byte.
and
LDCI
instructions, refer to eZ8 CPU Core User Manual (UM0128) available for
LDC
or
FFH
LDCI
. The Flash Page Select register
instructions. For a description of the
Z8 Encore! XP
FFH
). The programming
Product Specification
®
F0823 Series
Flash Memory
FFH
95h
.
135