XA-C3 Datasheet, PDF (15/68 Pages) NXP Semiconductors – XA 16-bit microcontroller family 32K/1024 OTP CAN transport layer controller 1 UART, 1 SPI Port, CAN 2.0B, 32 CAN ID Filters, transport layer co-proce

Philips Semiconductors
XA 16-bit microcontroller family
32K/1024 OTP CAN transport layer controller
1 UART, 1 SPI Port, CAN 2.0B, 32 CAN ID filters, transport layer co-processor
Preliminary specification
XA-C3
MNEMONIC
P3.4
PIN NUMBERS
PLCC LQFP
16
10
TYPE
NAME AND FUNCTION
I/O T0: Timer 0 External count input or Timer 0 Overflow output.
P3.5
17
11
I/O T1 : Timer 1 External count input or Timer 1 Overflow output.
P3.6
18
12
O WRL/: External DATA memory Low Byte Write Strobe.
P3.7
19
13
O RD/: External DATA memory Read Strobe.
RST/
10
4
I
RESET/:
NOTE:
10. A low on this pin resets the XA–C3, causing I/O Ports and peripherals to take on
their default states, and the processor to begin execution at the Address contained in
the Reset Vector.
Refer to the Reset section for details.
ALE ; PROG/
33
27
I/O Address Latch Enable ; Program Pulse/:
NOTES:
11. A high output on the ALE pin signals External circuitry to latch the address portion of
the multiplexed Address/DATA bus.
12. A pulse on ALE occurs only when needed to process an External bus cycle. During
EPROM programming, this pin is used as the Program pulse input.
PSEN/
32
26
O Program Store Enable/:
This is the Read Strobe for External PROGRAM memory.
NOTES:
13. When the microcontroller accesses External PROGRAM memory, PSEN/ is driven
low in order to enable memory devices.
14. PSEN/ is only active when External code accesses are performed.
EA/ ; WAIT ;
35
29
I
External Access/ ; WAIT ; Programming Supply Voltage:
V_PP
NOTES:
15. The EA/ input determines whether the internal PROGRAM memory of the XA–C3 is
used for code execution.
16. The EA/ pin is latched as the (External) Reset input is released and its value applied
during later execution. When latched as a 0, External PROGRAM memory is used
exclusively. When latched as a 1, internal PROGRAM memory will be used up to its
limit, and External PROGRAM memory is used above that point.
17. After Reset is released, this pin takes on the function of a Bus WAIT input. If WAIT
is asserted High during any External bus access, that cycle will be extended until
WAIT is released.
18. During EPROM programming, this pin is also the programming supply voltage input.
CAN RxD
12
6
I
CAN Receive Data input: CAN serial receiver input to the SJA1000 PeliCAN core.
CAN TxD
34
28
O CAN Transmit Data output: CAN serial transmitter output from the SJA1000 PeliCAN
core.
XTAL1
21
15
I
Crystal 1: Input to the inverting amplifier used in the oscillator circuit and input to the
internal clock generator circuits.
XTAL2
20
14
O Crystal 2: Output from the oscillator amplifier.
NOTE:
1. All active–low signals are indicated by a “/” symbol.
2000 Jan 25
8