MC68HC16Z1CPV16 Freescale Semiconductor, MC68HC16Z1CPV16 Datasheet - Page 171
![IC MPU 1K RAM 16MHZ 144-LQFP](/photos/6/76/67683/375-144-tqfp_sml.jpg)
MC68HC16Z1CPV16
Manufacturer Part Number
MC68HC16Z1CPV16
Description
IC MPU 1K RAM 16MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Series
HC16r
Datasheet
1.MC68HC16Z1VEH16.pdf
(500 pages)
Specifications of MC68HC16Z1CPV16
Core Processor
CPU16
Core Size
16-Bit
Speed
16MHz
Connectivity
EBI/EMI, SCI, SPI
Peripherals
POR, PWM, WDT
Number Of I /o
16
Program Memory Type
ROMless
Ram Size
1K x 8
Voltage - Supply (vcc/vdd)
2.7 V ~ 5.5 V
Data Converters
A/D 8x10b
Oscillator Type
Internal
Operating Temperature
-40°C ~ 85°C
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Eeprom Size
-
Program Memory Size
-
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5.9.1.2 Chip-Select Base Address Registers
M68HC16 Z SERIES
USER’S MANUAL
Port size determines the way in which bus transfers to an external address are allo-
cated. Port size of eight bits or sixteen bits can be selected when a pin is assigned as
a chip-select. Port size and transfer size affect how the chip-select signal is asserted.
Refer to
Out of reset, chip-select pin function is determined by the logic level on a correspond-
ing data bus pin. The data bus pins have weak internal pull-up drivers, but can be held
low by external devices. Refer to
tion. Either 16-bit chip-select function (%11) or alternate function (%01) can be select-
ed during reset. All pins except the boot ROM select pin (CSBOOT) are disabled out
of reset. There are twelve chip-select functions and only eight associated data bus
pins. There is not a one-to-one correspondence. Refer to
Operation
The CSBOOT signal is enabled out of reset. The state of the DATA0 line during reset
determines what port width CSBOOT uses. If DATA0 is held high (either by the weak
internal pull-up driver or by an external pull-up device), 16-bit port size is selected. If
DATA0 is held low, 8-bit port size is selected.
A pin programmed as a discrete output drives an external signal to the value specified
in the port C register. No discrete output function is available on CSBOOT, BR, BG, or
BGACK. ADDR23 provides the ECLK output rather than a discrete output signal.
When a pin is programmed for discrete output or alternate function, internal chip-select
logic still functions and can be used to generate DSACK or AVEC internally on an ad-
dress and control signal match.
Each chip-select has an associated base address register. A base address is the low-
est address in the block of addresses enabled by a chip-select. Block size is the extent
of the address block above the base address. Block size is determined by the value
contained in BLKSZ[2:0]. Multiple chip-selects assigned to the same block of address-
es must have the same number of wait states.
BLKSZ[2:0] determines which bits in the base address field are compared to corre-
sponding bits on the address bus during an access. Provided other constraints deter-
mined by option register fields are also satisfied, when a match occurs, the associated
chip-select signal is asserted.
5.9.1.3 Chip-Select Option Registers
for more detailed information.
NOTES:
1. ADDR[23:20] are the same logic level as ADDR19 during normal op-
BLKSZ[2:0]
eration.
000
001
010
011
100
101
110
111
Freescale Semiconductor, Inc.
For More Information On This Product,
Table 5-24 Block Size Encoding
SYSTEM INTEGRATION MODULE
Go to: www.freescale.com
Table 5-24
Block Size
128 Kbytes
256 Kbytes
512 Kbytes
512 Kbytes
16 Kbytes
64 Kbytes
2 Kbytes
8 Kbytes
5.7.3.1 Data Bus Mode Selection
shows BLKSZ[2:0] encoding.
Address Lines Compared
for more information.
ADDR[23:11]
ADDR[23:13]
ADDR[23:14]
ADDR[23:16]
ADDR[23:17]
ADDR[23:18]
ADDR[23:19]
ADDR[23:20]
5.9.4 Chip-Select Reset
1
for more informa-
5-65
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