EZ80F91AZA50EG Zilog, EZ80F91AZA50EG Datasheet - Page 240

• 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

Table 130. I
PS027001-0707
Bit
Reset
CPU Access
Note: W = Read only.
Bit
Position
7
[6:3]
M
[2:0]
N
2
C Clock Control Registers
I
The I
which the I
is in MASTER mode. The Write Only I
the Read Only I2C_SR registers. See
The I
of this system clock is f
f
In MASTER mode, the I
lowing equation:
The use of two separately-programmable dividers allows the MASTER mode output
frequency to be set independently of the frequency at which the I
feature is particularly useful in multimaster systems because the frequency at which the
I
to ensure that START and STOP conditions are always detected. By using two
2
SAMP
2
C Clock Control Register
C bus is sampled must be at least 10 times the frequency of the fastest master on the bus
Value
0
0000–1111 I
000–111
2
2
f
f
C_CCR register is a Write Only register. The seven LSBs control the frequency at
C clocks are derived from the system clock of the eZ80F91 device. The frequency
SAMP
SCL
supplied by the following equation:
2
W
=
7
0
C bus is sampled and the frequency of the I
=
10 • (M + 1)(2)
Description
Reserved.
I
2
2
f
C clock divider scalar value.
C clock divider exponent.
SCLK
2
W
6
0
N
f
SCLK
SCK
2
C clock output frequency on SCL (f
. The I
W
5
0
(I2C_CCR = 00CCh)
N
2
C bus is sampled by the I
W
4
0
Table
2
C_CCR registers share the same I/O addresses as
130.
W
3
0
W
2
0
2
C clock line (SCL) when the I
W
2
1
0
C block at the frequency
SCL
Product Specification
2
) is supplied by the fol-
C bus is sampled. This
W
0
0
I
2
C Serial I/O Interface
eZ80F91 ASSP
2
C
232