EP7309-CBZ Cirrus Logic Inc, EP7309-CBZ Datasheet - Page 8
![IC ARM720T MCU 74MHZ 256-PBGA](/photos/12/32/123256/mfg_ep7309_parts_sml.jpg)
EP7309-CBZ
Manufacturer Part Number
EP7309-CBZ
Description
IC ARM720T MCU 74MHZ 256-PBGA
Manufacturer
Cirrus Logic Inc
Series
EP7r
Specifications of EP7309-CBZ
Core Size
32-Bit
Core Processor
ARM7
Speed
74MHz
Connectivity
Codec, DAI, EBI/EMI, IrDA, Keypad, SPI/Microwire1, UART/USART
Peripherals
LCD, LED, MaverickKey, POR, PWM
Number Of I /o
27
Program Memory Type
ROMless
Ram Size
56K x 8
Voltage - Supply (vcc/vdd)
2.3 V ~ 2.7 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
256-BGA
Controller Family/series
(ARM7)
No. Of I/o's
27
Ram Memory Size
48KB
Cpu Speed
74MHz
No. Of Timers
2
No. Of Pwm Channels
2
Digital Ic Case Style
BGA
Embedded Interface Type
SSI, UART
Rohs Compliant
Yes
Processor Series
EP73xx
Core
ARM720T
Data Bus Width
32 bit
Mounting Style
SMD/SMT
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Other names
598-1211
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
EP7309
High-Performance, Low-Power System on Chip
Synchronous Serial Interface
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LCD Controller
A DMA address generator is provided that fetches video
display data for the LCD controller from memory. The display
frame buffer start address is programmable, allowing the LCD
frame buffer to be in SDRAM, internal SRAM or external
SRAM.
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64-Keypad Interface
Matrix keyboards and keypads can be easily read by the
EP7309. A dedicated 8-bit column driver output generates
strobes for each keyboard column signal. The pins of Port A,
when configured as inputs, can be selectively OR'ed together
to provide a keyboard interrupt that is capable of waking the
system from a STANDBY or IDLE state.
8
ADCLK
ADCIN
ADCOUT
nADCCS
SMPCLK
CL1
CL2
DD[3:0]
FRM
M
Pin Mnemonic
ADC (SSI) Interface: Master mode only; SPI and
Microwire1-compatible (128 kbps operation)
Selectable serial clock polarity
Interfaces directly to a single-scan panel monochrome STN
LCD
Interfaces to a single-scan panel color STN LCD with
minimal external glue logic
Panel width size is programmable from 32 to 1024 pixels in
16-pixel increments
Video frame buffer size programmable up to
128 KB
Bits per pixel of 1, 2, or 4 bits
Pin Mnemonic
Table 7. Serial Interface Pin Assignments
Table 8. LCD Interface Pin Assignments
I/O
O
O
O
O
O
I/O
O
O
O
O
I
LCD line clock
LCD pixel clock out
LCD serial display data bus
LCD frame synchronization pulse
LCD AC bias drive
SSI1 ADC serial clock
SSI1 ADC serial input
SSI1 ADC serial output
SSI1 ADC chip select
SSI1 ADC sample clock
Pin Description
Pin Description
Copyright Cirrus Logic, Inc. 2011
(All Rights Reserved)
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Interrupt Controller
When unexpected events arise during the execution of a
program (i.e., interrupt or memory fault) an exception is
usually generated. When these exceptions occur at the same
time, a fixed priority system determines the order in which
they are handled. The EP7309 interrupt controller has two
interrupt types: interrupt request (IRQ) and fast interrupt
request (FIQ). The interrupt controller has the ability to control
interrupts from 22 different FIQ and IRQ sources.
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Real-Time Clock
The EP7309 contains a 32-bit Real Time Clock (RTC) that can
be written to and read from in the same manner as the timer
counters. It also contains a 32-bit output match register which
can be programmed to generate an interrupt.
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COL[7:0]
nEINT[2:1]
EINT[3]
nEXTFIQ
nMEDCHG/nBROM
Column outputs can be individually set high with the
remaining bits left at high-impedance
Column outputs can be driven all-low, all-high, or all-high-
impedance
Keyboard interrupt driven by OR'ing together all Port A
bits
Keyboard interrupt can be used to wake up the system
88 keyboard matrix usable with no external logic, extra
keys can be added with minimal glue logic
Supports 22 interrupts from a variety of sources (such as
UARTs, SSI1, and key matrix.)
Routes interrupt sources to the ARM720T’s IRQ or FIQ
(Fast IRQ) inputs
Five dedicated off-chip interrupt lines operate as level
sensitive interrupts
Note:
Driven byan external 32.768 kHz crystal oscillator
Pin Mnemonic
Pin Mnemonic
Table 10. Interrupt Controller Pin Assignments
Pins are multiplexed. See
more information.
Table 9. Keypad Interface Pin Assignments
(Note)
I/O
O
I/O
I
I
I
I
Table 18 on page 10
Keyboard scanner column
drive
External interrupt
External interrupt
External Fast Interrupt input
Media change interrupt input
Pin Description
Pin Description
for
DS507F2