EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 249

• Manufacturer Part Number: EZ80F91AZA50EG
• Description: IC ACCLAIM MCU 256KB 144LQFP
• Manufacturer: Zilog
• Series: eZ80® AcclaimPlus!™r

Specifications of EZ80F91AZA50EG

• Core Processor: Z8
• Core Size: 8-Bit
• Speed: 50MHz
• Connectivity: Ethernet, I²C, IrDA, SPI, UART/USART
• Peripherals: Brown-out Detect/Reset, POR, PWM, WDT
• Number Of I /o: 32
• Program Memory Size: 256KB (256K x 8)
• Program Memory Type: FLASH
• Ram Size: 16K x 8
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: Internal
• Operating Temperature: -40°C ~ 105°C
• Package / Case: 144-LQFP
• Processor Series: EZ80F91x
• Core: eZ80
• Data Bus Width: 8 bit
• Data Ram Size: 16 KB
• Interface Type: I2C, IrDA, SPI
• Maximum Clock Frequency: 50 MHz
• Number Of Programmable I/os: 32
• Number Of Timers: 4
• Operating Supply Voltage: 3 V to 3.6 V
• Maximum Operating Temperature: + 105 C
• Mounting Style: SMD/SMT
• Development Tools By Supplier: eZ80F910300ZCOG
• Minimum Operating Temperature: - 40 C
• For Use With: 269-4712 - KIT DEV ENCORE 32 SERIES269-4671 - BOARD ZDOTS SBC Z80ACCLAIM PLUS269-4561 - KIT DEV FOR EZ80F91 W/C-COMPILER269-4560 - KIT DEV FOR EZ80F91 W/C-COMPILER
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Data Converters: -
• Lead Free Status / Rohs Status: Details
• Other names: 269-4563

PS027001-0707
ZDA
ZCL
Note:
ZDI Read Operations
ZDA
ZCL
ZDI Address
ZDI Address
lsb of
A0
7
ZDI Single-Byte Read
Single-byte Read operations are initiated in the same manner as single-byte Write opera-
tions, with the exception that the R/W bit of the ZDI register address is set to 1. Upon
receipt of a slave address with the R/W bit set to 1, the eZ80F91 device’s ZDI block loads
the selected data into the shifter at the beginning of the first cycle following the single-bit
data separator. The most-significant bit (msb) is shifted out first.
timing for ZDI single-byte Read operations.
lsb of
In ZDI single-byte read operations, after each read operation, the Program Counter (PC)
address is incremented by two bytes. For example, if the current PC address is 0x00, then
A0
7
Write
8
Read
Byte Separator
8
Byte Separator
Single-Bit
Figure 55. ZDI Single-Byte Data Read Timing
Single-Bit
0/1
Figure 54. ZDI Block Data Write Timing
9
0/1
9
of DATA
of DATA
Byte 1
msb
D7
msb
D7
1
1
D6
D6
2
2
D5
3
D5
3
ZDI Data Byte
D4
ZDI Data Bytes
4
D1
7
of DATA
D3
Byte 1
5
D0
lsb
8
Byte Separator
Single-Bit
D2
6
0/1
9
D1
7
D7
Product Specification
Figure 55
1
of DATA
D0
lsb
8
of DATA
Zilog Debug Interface
Byte 2
START Signal
End of Data
msb
or New ZDI
D6
eZ80F91 ASSP
2
1
illustrates the
9
1
9
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