PXAH30KFBE,557 NXP Semiconductors, PXAH30KFBE,557 Datasheet - Page 31
PXAH30KFBE,557
Manufacturer Part Number
PXAH30KFBE,557
Description
IC XA MCU 16BIT CMOS 100LQFP
Manufacturer
NXP Semiconductors
Series
XAr
Datasheet
1.PXAH30KFBE.pdf
(36 pages)
Specifications of PXAH30KFBE,557
Core Processor
XA
Core Size
16-Bit
Speed
30MHz
Connectivity
EBI/EMI, UART/USART
Peripherals
DMA, WDT
Number Of I /o
33
Program Memory Size
-
Program Memory Type
ROMless
Eeprom Size
-
Ram Size
256 x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
-
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
100-LQFP
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PXAH30KFBE,557
Manufacturer:
NXP Semiconductors
Quantity:
10 000
Philips Semiconductors
1999 Sep 24
CMOS 16-bit highly integrated microcontroller
On all cycles on 8-bit bus, BHE remains high (inactive)
Note:
WARNING: Some 8-bit I/O devices (especially FIFOS) cannot operate correctly with 2 bytes being read for a one byte read. The most common (and least expensive)
solution is to operate these 8-bit devices on a 16-bit bus, and access them in software on all odd byte (or all even byte) boundaries. An added benefit of this tech-
nique is that byte reads are faster than on an 8-bit bus, because only 1 word is fetched (a single read) instead of 2 consecutive bytes.
BHE/BLE
On the external bus, ALL XA-H4 reads are 16-bit reads. If the CPU instruction only specifies 8-bits, then the CPU uses the appropriate byte, and discards the
extra byte. Thus, “8-Bit Reads” and “16-Bit Reads” appear to be identical on the bus. On an 8-bit bus, this will appear as two consecutive 8-bit reads even
though the CPU will only use one of the two bytes.
ClkOut
A19 – A1
D7 – D0
WE
CS
ClkOut
D
A
BLE
CS
OE
A0
Driven by XA
t
CHAV
t
CHDV
Figure 9. Write ( byte write on 8-bit bus, or all writes on 16-bit bus )
t
AVSL
t
AVSL
Figure 10. Read (16-Bit or 8-Bit) on 8 Bit Bus
t
Note 1
CHSL
t
CHSL
Note 3
t
DIS
t
CHSH
31
Note 2
t
CHAV
t
t
SHAH
SHDH
t
CHSH
t
DIS
Note 2
t
DIH
t
OHDE
Driven by XA
t
AHDR
SU01278
Preliminary specification
XA-H3
SU01283