EZ80F93AZ020SG Zilog, EZ80F93AZ020SG Datasheet - Page 205

• Manufacturer Part Number: EZ80F93AZ020SG
• Description: IC ACCLAIM MCU 64KB 100LQFP
• Manufacturer: Zilog
• Series: eZ80® Acclaim!®r

Specifications of EZ80F93AZ020SG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 20MHz
• Connectivity: I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, WDT
• Number Of I /o: 24
• Program Memory Size: 64KB (64K x 8)
• Program Memory Type: FLASH
• Ram Size: 4K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 100-LQFP
• Processor Series: EZ80F93x
• Core: eZ80
• Data Bus Width: 8 bit
• Data Ram Size: 4 KB
• Interface Type: I2C, IrDA, SPI, UART
• Maximum Clock Frequency: 20 MHz
• Number Of Programmable I/os: 24
• Number Of Timers: 6
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 70 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: eZ80F920200ZCOG
• Minimum Operating Temperature: 0 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 269-3874; EZ80F93AZ020SG

PS015313-0508
Flash Key Register
Writing the two-byte sequence
the Flash Divider and Flash Write/Erase Protection registers. If these values are not
written by consecutive CPU I/O writes (I/O reads and memory Read/Writes produce no
effect), the Flash Divider and Flash Write/Erase Protection registers remain locked to
prevent accidental overwrites of these critical Flash control register settings. Writing a
value to either the Flash Frequency Divider register or the Flash Write/Erase Protection
register automatically relocks both of the registers again.
Table 113. Flash Key Register; (FLASH_KEY = 00F5h)
Flash Data Register
The Flash Data register stores the data values to be programmed to Flash memory through
I/O Write operations. This register is used for all I/O Write access to Flash, both individual
byte Writes and multibyte row programming.
For single-byte I/O Write operations, a single-byte Write to this I/O register programs the
data value into the single-byte location pointed to by the page, row, and column registers.
For multibyte I/O Write operations, the Flash controller autoincrements the column
address for each byte placed into this register. A maximum of 128 bytes of data can be
programmed into Flash during a multibyte I/O Write operation. The ROW_PGM bit in the
Flash Program Control register must be set to 1 prior to beginning a multibyte I/O Write
operation.
This register does not return data from Flash memory. If read, this register returns the most
recent data value written to the register.
Bit
Reset
CPU Access
Note: W = Write Only.
Bit
Position
[7:0]
FLASH_KEY
Value Description
B6h,
49h
Sequential Write operations of the values {B6h, 49h} to this
register unlock the Flash Frequency Divider and Flash Write/
Erase Protection registers.
W
7
0
B6h
,
W
6
0
49h
in immediate succession to this register unlocks
W
5
0
W
4
0
W
3
0
Product Specification
W
2
0
eZ80F92/eZ80F93
W
1
0
Flash Memory
W
0
0
198