EP9312-CBZ Cirrus Logic Inc, EP9312-CBZ Datasheet - Page 763
EP9312-CBZ
Manufacturer Part Number
EP9312-CBZ
Description
IC ARM9 SOC UNIVERSAL 352PBGA
Manufacturer
Cirrus Logic Inc
Series
EP9r
Specifications of EP9312-CBZ
Core Size
16/32-Bit
Core Processor
ARM9
Speed
200MHz
Connectivity
EBI/EMI, EIDE, Ethernet, I²C, IrDA, Keypad/Touchscreen, SPI, UART/USART, USB
Peripherals
AC'97, DMA, I²:S, LCD, LED, MaverickKey, POR, PWM, WDT
Number Of I /o
16
Program Memory Type
ROMless
Ram Size
32K x 8
Voltage - Supply (vcc/vdd)
1.65 V ~ 3.6 V
Data Converters
A/D 8x12b
Oscillator Type
External
Operating Temperature
0°C ~ 70°C
Package / Case
352-BGA
Controller Family/series
(ARM9)
No. Of I/o's
16
Ram Memory Size
16MB
Cpu Speed
200MHz
No. Of Timers
4
No. Of Pwm Channels
2
Digital Ic Case Style
BGA
Embedded Interface Type
AC97, I2S, SPI, UART, USB
Rohs Compliant
Yes
Processor Series
EP93xx
Core
ARM920T
Data Bus Width
32 bit
3rd Party Development Tools
MDK-ARM, RL-ARM, ULINK2
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Lead Free Status / Rohs Status
Details
Other names
598-1258
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
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DS785UM1
26.1 Introduction
The keypad interface has the following features:
If the system does not use a keyboard, the Row[7:0] and Column[7:0] pins can be remapped
to General Purpose Input/Output (GPIO) pins. For details, see
page 5-25
A block diagram for the key array scanning circuitry is shown in
Note: This chapter applies only to the EP9307, EP9312, and EP9315 processors.
• A maximum 8x8 array of normally open, single pole contacts
• A back drive feature to minimize capacitance effects
• A typical scan count limit of 3 consecutive scans
• A maximum mechanical bounce time for a key press of 20 milliseconds
• A typical interrupt interval between 24 and 44 milliseconds
• A low-power wakeup mode
• A three-key reset
Column lines
Inactive
and
Chapter
Debounce Counter
Pipeline
Precounter
28,
Figure 26-1. Key Array Block Diagram
Table 28-4 on page
Column Mux
Copyright 2007 Cirrus Logic
Diagnostics
Row/Collumn
Counter
Scan
Control
Row Decoder
28-8.
Pipeline
Interrupt
Controller
Temp Key Regs
26Keypad Interface
Row lines
3 Key Reset Key Detector
Chapter
Figure
Equal
Compare
Key Regs
3 Key Reset
Interrrupt
26-1.
5,
Chapter 26
“DeviceCfg” on
26-1
26
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