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| 型號(hào)： | CR16HCT9VJE9Y |
| 英文描述： | Microcontroller |
| 中文描述： | 微控制器 |
| 文件頁(yè)數(shù)： | 19/157頁(yè) |
| 文件大小： | 1256K |
| 代理商： | CR16HCT9VJE9Y |
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The IOCFG register address is F902 hex. Upon reset, the
register is initialized to 069F hex. The register format is
shown below.
15
14
13
12
11
Reserved
WAIT
Memory Wait cycles
This field specifies the number of TIW (internal
wait state) clock cycles added for each memory
access, ranging from 000 binary for no addi-
tional TIW wait cycles to 111 binary for seven
additional TIW wait cycles.
Memory Hold cycles
This field specifies the number of Thold clock
cycles used for each memory access, ranging
from 00 binary for no Thold cycles to 11 binary
for three Thold clock cycles.
Bus Width.
This bit defines the bus width of the zone.
If cleared to 0, a bus width of 8-bit is used.
if set to 1, a bus width of 16-bit is used.
For the device, a bus width of 16-bit needs to
be set.
Post Idle.
An idle cycle follows the current bus cycle,
when the next bus cycle accesses a different
zone.
If cleared to 0, no idle cycle is inserted.
If set to 1, one idle cycle is inserted.
The IPST bit can be cleared to 0, as no idle cy-
cles are required for on-chip accesses.
Note:
Reserved bits must be cleared to 0 when the CPU
writes to the register.
HOLD
BW
IPST
8.2.3
The Static Zone 0 Configuration (SZCFG0) register is a
word-wide, read/write register that sets the timing and bus
characteristics of Zone 0 memory accesses. In the device im-
plementation of the CompactRISC architecture, Zone 0 is oc-
cupied by the flash EEPROM program memory.
The SCCFG0 register address is F904 hex. Upon reset, the
register is initialized to 069F hex. The register format is
shown below.
15
14
13
12
11
Reserved
FRE
IPRE
Static Zone 0 Configuration (SZCFG0) Register
WAIT
Memory Wait cycles
This field specifies the number of TIW (internal
wait state) clock cycles added for each memory
access, ranging from 000 binary for no addi-
tional TIW wait cycles to 111 binary for seven
additional TIW wait cycles. These bits are ig-
nored if the SZCFG0.FRE bit is set to 1.
HOLD
Memory Hold cycles
This field specifies the number of Thold clock
cycles used for each memory access, ranging
from 00 binary for no Thold cycles to 11 binary
for three Thold clock cycles. These bits are ig-
nored if the SZCFG0.FRE bit is set to 1.
Bus Width.
This bit defines the bus width of the zone.
If cleared to 0, a bus width of 8-bit is used.
if set to 1, a bus width of 16-bit is used.
For the devicedevice a bus width of 16-bit
needs to be set.
Fast Read Enable
This bit enables (1) or disables (0) fast read
bus cycles. A fast read operation takes one
clock cycle. A normal read operation takes at
least two clock cycles.
Post Idle.
An idle cycle follows the current bus cycle,
when the next bus cycle accesses a different
zone.
If cleared to 0, no idle cycle is inserted.
If set to 1, one idle cycle is inserted.
The IPST bit can be cleared to 0, as no idle cy-
cles are required for on-chip accesses.
Preliminary Idle.
An idle cycle is inserted prior to the current bus
cycle, when the new bus cycle accesses a dif-
ferent zone.
If cleared to 0, no idle cycle is inserted.
If set to 1, one idle cycle is inserted.
The IPRE bit can be cleared to 0, as no idle cy-
cles are required for on-chip accesses.
Note:
Reserved bits must be cleared to 0 when the CPU
writes to the register.
BW
FRE
IPST
IPRE
8.2.4
The Static Zone 1 Configuration (SZCFG1) register is a
word-wide, read/write register that sets the timing and bus
characteristics of Zone 1 memory accesses. In the device im-
plementation of the CompactRISC architecture, Zone 1 is oc-
cupied by the boot ROM memory (ISP-Memory).
The SCCFG1 register address is F906 hex. Upon reset, the
register is initialized to 069F hex. The register format is
shown below.
15
14
13
12
11
Reserved
FRE
IPRE
Static Zone 1 Configuration (SZCFG1) Register
WAIT
Memory Wait cycles
This field specifies the number of TIW (internal
wait state) clock cycles added for each memory
access, ranging from 000 binary for no addi-
tional TIW wait cycles to 111 binary for seven
additional TIW wait cycles. These bits are ig-
nored if the SZCFG0.FRE bit is set to 1.
Memory Hold cycles
This field specifies the number of Thold clock
HOLD
10
9
8
IPST
Reserved
7
6
5
4
3
2
1
0
BW
Reserved
HOLD
WAIT
10
9
8
IPST
Reserved
7
6
5
4
3
2
1
0
BW
Reserved
HOLD
WAIT
10
9
8
IPST
Reserved
7
6
5
4
3
2
1
0
BW
Reserved
HOLD
WAIT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CR16HCT9VJEX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:CR16MCT9/CR16MCT5/CR16HCT9/CR16HCT5 16-Bit Reprogrammable/ROM Microcontroller |
| CR16HCT9VJEXY | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:CR16MCT9/CR16MCT5/CR16HCT9/CR16HCT5 16-Bit Reprogrammable/ROM Microcontroller |
| CR16M9S5 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Family of CompactRISC 16-Bit Microcontrollers |
| CR16MAR5 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Family of 16-bit CAN-enabled CompactRISC Microcontrollers |
| CR16MAR5VJE0 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:Family of 16-bit CAN-enabled CompactRISC Microcontrollers |
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